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He’d thought, time and time again, about how those digits would feel against him. Against his frame, against his interface panel, against the wet heat of his valve as he soaked those digits with his intense desire.
Primal gasped as Dinobot lay him flat, kissing the nape of his neck and purring deep in his chassis. His sharp digits trailed down his front, down his chassis and his abdominal plating and his pelvis, before stroking along the very warm plating that covered Primal’s interface array.
“You fraggin’ tease,” Primal said in a strained voice, trying very hard to not immediately relent and beg for Dinobot to take him. He curled his digits into his palms and put his fists to his side, giving the velociraptor a cutting look that was blunted and held no malice in it.
Dinobot chuckled, and oh how his voice just absolutely drove Primal insane. He was able to catch his coding about to release the locks on his interface panel, and overrode it to keep the locks in place. Then, his intakes hitched as the sharp tip of one of Dinobot’s digits traced around the edges of the panel.
Frag it.
He released the locks and let his panel slip back, and was immediately overwhelmed by the hungry way that Dinobot put his mouth to his plump, dripping valve, his glossa flicking over the swollen and pert anterior node that peeked out from his folds.
“Primus,” Primal gasped.
“Primus has no power here,” Dinobot chuckled against Primal’s array, making his vocalizer fritz with the sensation. “But I do.” He drew back and put himself fully between Primal’s spread legs, the sound of his panel drawing back reaching Primal’s audio receptors.
The way the velociraptor’s spike rose and stood proudly between their frames made him want to put his mouth on it.
Perhaps later, Primal thought vaguely before that thought was completely erased from his mind with the hard thrust of Dinobot’s spike into his valve, his folds parting around the other mech and his valve greedily taking every micrometer of that glorious spike.
“Mmm, look at you,” Dinobot growled, increasing the tempo of his thrusts. “So ready, so eager for me! What a tragedy we are occupied now, as I could muse on every inch of your entire frame and never run out of things to admire about you.”
Primal gently knocked one of his knees against Dinobot’s side and laughed, “You’ll have plenty of time to worship me, if you get on with it!”
.-.-.
Primal then woke to a falcon zipping by the window of his quarters, screeching in the middle of the night, chassis heaving as his vents were open and trying to cool his incredibly warm frame.
A dream. He was both relieved and disappointed that it had been a dream.
There was heat behind his interface panel. He made sure that the code to his quarters was activated, locking it to Cheetor and Rattrap. Dinobot and Rhinox could still enter, but they would need to type in a code to access it - but those two were at least considerate enough to send him a comm request ahead of time. Then, he leaned back on his berth and slid his servo down his front, sending the command for his interface panel to go back.
He passed his servo over his spike housing and went straight for his anterior node, rubbing his digits over the pert and glowing little cluster.
There was code in his processor. It was telling him to turn over and prepare for mating.
But mating with who?
The question then disappeared from his processor, seized by the pleasant shocks that emanated from his valve as he sank two digits inside. He gasped and arched his neck, tilting his helm back, his vocalizer emitting another gasp as he added a third digit.
He kept the edge of his palm, where it met the wrist, on his anterior node, supplying friction to that cluster of neural wires and sending waves of pleasure through his pelvic struts. His digits weren’t long enough to really reach the depths of his valve where he felt that heat blooming, but he felt he could get fairly close if he just tried.
A few strokes against his anterior node later, and he was overloading. He put his free servo over his mouth and used it to muffle the cry he let out. How he wished it was instead another mouth on his, kissing him.
It had been a long time since this had happened, but once he accessed the coding in his frame and took a look at what was active and trying to override his basic functions, he recognized it immediately.
Heat cycle coding.
By the looks of it, it had been trying to start up for a few days already, and he realized that that was what his frame had been sending him pop-up notifications about. He’d swept them aside, as they came at inconvenient times when he was busy tending to something.
Now he was paying for the delay. The heat was demanding that he find a partner to help relieve him.
There was really only one mech he would have wanted to do that with, but it was out of the question. All his options here on this planet were out of the question for him.
Primal looked out the window and cleaned off his servo and wiped down his thighs, intakes a little shaky from the overload that hadn’t quite quelled his roaring need. He remembered from past experience that he had been able to sate this on his own - it was just much, much quicker to do it with someone else in one night as opposed to an entire day or two cooped up alone.
He sent Rhinox a message that he was going to be gone for some time, and to not look for him because he needed to wait something out. Only if he was gone longer than a day should Rhinox try to check in, and if he didn’t respond back, to go look for him.
.-.-.
Dinobot heard the noises of someone walking down the hallway towards the entrance/exit of the ship. He sat up in his berth as quietly as possible, and paid attention to the footfalls.
It was a heavier frame, not a small one like Rattrap or a medium-but-light one like Cheetor. It had to be either Rhinox or Optimus Primal that was up at this hour of the night. He listened more closely to the steps, trying to see if he could tell definitively which of the larger frames it was.
That gait sounded a lot more like Primal, but he couldn’t tell with absolute certainty.
Then, he heard the noise of the ship letting someone outside. Dinobot crept his way out of his quarters, waiting a few moments for the sounds of steps to fade before he followed the errant bot out. When he stepped out, he looked up in the distance to see Optimus Primal, in his beast mode, darting towards a collection of hills and mountains nearby.
Without waiting, Dinobot took on his own beast mode and began tracking his commander down.
.-.-.
There was a cave in the vicinity that would afford him privacy and yet still be close enough to the ship that if he attracted the attention of any Predacons, he could make his way back. That is, if his mind wasn’t too far gone from this sudden-onset heat that he might proposition one of the Predacons themselves.
He shuddered at the thought. There wasn’t a redeeming quality in any of them, and the only one that had any was now a Maximal.
Again he felt the ghostly touches of Dinobot’s digits on his frame, and imagined them near his pelvis and his interface panel. He reached that cave and immediately took on his robot form, huddling near the back and instantly putting his own servos to his valve.
The heat was taking over him. He couldn’t guarantee that this would even work, but he had to give it a shot. He couldn’t in good consciousness ask anyone else to help relieve him of his heat, for it was his burden to bear.
His endeavor was immediately interrupted by the snapping of a twig outside that made him freeze where he was. He looked up at the entrance of the cave, where silhouetted against the starry night sky, was a very familiar shadowy outline.
He wasn’t sure if it would have been better if it had been, say, Megatron. Dinobot’s red optics glowed and peered at him, and in the dim light of their optics and the starlight, Primal could tell that there was a look of concern on the velociraptor’s face.
How he hadn’t wanted to be swallowed by the ground more than in this moment.
“Optimus?”
Primal moved his servo away from his array as discreetly and quickly as he could, clearing his vocalizer to try and mask the noise of his interface panel closing again. “So. It looks like I wasn’t as quiet when I left the ship as I thought I was, huh?”
Dinobot stepped in, and Primal prayed that the earthy smell around them masked the smell of his fluids and his desperate attempts to achieve an overload that would quell that urge to frag. Just being in proximity to Dinobot, this close, made it hard for him to think about what was going on. It took all his willpower to not offer himself to Dinobot right then and there.
“I heard you leaving, yes,” Dinobot growled. “It’s rather unlike you. What is it?”
“It’s…” he trailed off for a moment to reset his vocalizer before finishing. “It’s nothing.”
It’s everything .
From the look on the other mech’s faceplate, Primal could tell Dinobot wasn’t dumb enough to fall for his weak statement.
“If it’s truly ‘nothing’ as you say,” Dinobot replied, “then why did you depart the base?”
Primal had to admit that Dinobot had him there. He hadn’t thought that far ahead when he’d tried to give an excuse.
Then he saw Dinobot’s expression change. The other mech gave a look as if he were just now seeing him for the first time in his life. Dinobot raised his helm slightly, and Primal’s audio receptors picked up on the noise of the other mech’s olfactory sensors processing, picking up on-
“There is something,” Dinobot stated quietly. He then crouched down in front of his commander. “Optimus Primal, you’re in heat .”
He couldn’t deny it any longer. Primal gave a shuddering sigh as he pushed down the urge to kiss Dinobot right then and there. “How could you tell?”
Dinobot’s optics refocused and he briefly looked down between their frames for a moment before he met his commander’s optics again. “I’ve been around bots in heat enough times to know that their base scents change to become more attractive to others. And yours is just as intense as theirs were.”
Frag. He’d been found out indeed. Primal closed his optics and sighed. “I’d been trying to ignore it for a few solar cycles. Too busy. Now I’m paying for it.”
Behind his panel, he could feel his valve throb slightly. It seemed that not only was his own scent incredibly intense to Dinobot, but his own olfactory sensors were overwhelmed by Dinobot’s own scent. He wondered if the other mech’s frame was merely reacting to the pheromones his frame was giving off, or if it was just his own frame reacting strongly to this strong and handsome potential mate, and it was making Dinobot smell that much more alluring.
“Have you ever experienced a heat cycle before?”
Primal reopened his optics and met the other mech’s gaze. He nodded. “I know what to do. It’ll just… it’ll take a little while by myself.”
He then felt something strange in the velociraptor’s electromagnetic field. One of Dinobot’s servos reached out for him, hesitantly placing itself on the closest of his legs. “If you would… like assistance, I am here to help.”
Primal kept his mouth shut and tried his hardest to not immediately jump the other mech’s struts. Oh how he wanted this so badly, but he still had to make certain that this was also something that Dinobot wanted and not something he merely felt compelled to do. “Only if you’re certain,” he finally replied.
There was a small growl from Dinobot’s vocalizer. “I wouldn’t offer this to anyone else, Optimus. I offer this only to you.”
I offer this only to you .
Primal would have to try and remember to talk about that statement with Dinobot later. For now, after doing all he could to keep his dignity somewhat intact, all Primal could do was meet Dinobot’s gaze again and send the command for his interface panel to open up.
Almost immediately, he could see the change in Dinobot. Now it looked like it was the velociraptor that was having to use all his willpower to keep himself composed as he looked down at Primal’s wet valve, glowing red anterior node peeking out from between the slick folds. He began to reach between their frames for Primal’s array, but then paused and looked up.
“Are you certain?”
Primal nearly barked out a laugh as he moved his leg to nudge the other mech closer. “If it helps relieve this faster, yes, hurry,” he said a little sharply.
“So impatient,” Dinobot chuckled as he put himself between Primal’s parted legs, stroking his digits along the sensitive metal of his thighs, prompting Primal to moan softly. “Is it the heat coding talking?”
Was it? Primal wasn’t very sure. Part of him wanted this to be as drawn out as possible, for him to savor every touch that Dinobot gave him, but the other part of him wanted Dinobot to mount him and quickly , to drive his spike in harder and faster until they didn’t have the strength to copulate anymore. He gave a shuddering groan. “I… I don’t know. Just have me, please,” he pleaded softly. “Have me how you want.”
The sharp tips of Dinobot’s digits were stroking around his wet folds as he began giving gentle kisses along the sensitive plating of his thighs, gently nipping at the seams with his sharp dentae. His red optics peered up at Primal from his position.
Intakes shivering in pleasure, Primal reached a servo down and placed it on the side of Dinobot’s helm, gently rubbing along the edges of one of the curved protruding fins.
“Mmm,” Dinobot purred, incredibly close to his valve but not close enough at the same time. “You’re displaying remarkable self-control, Optimus Most others in heat would have been begging for me to spike them already.”
Primal chuckled and then moaned as he felt Dinobot’s mouth give a few questing sucks to his damp folds. “Trust me,” he managed to whisper. “That’s all that my processor is screaming for right now.”
Dinobot’s own intakes hitched in response. His mouth then closed itself over Primal’s swollen anterior node and he gave a very eager suck that made the Maximal Commander’s entire sensory network catch on fire. He couldn’t help the cry that escaped his vocalizer nor the way his hips bucked upwards into Dinobot’s face. Oh it was absolutely incredible, and he was being driven wild by the slow and measured way that Dinobot alternated between sucking and licking.
The last time Primal had felt this much pleasure had been… he realized he couldn’t remember. All he knew was that it had been a very long time.
After what felt like a lifetime of being slowly and tenderly driven over the edge of a cliff by the other mech’s glossa, he felt Dinobot start to quest a little further. He felt the other mech’s servos move to secure his frame a little bit more, to keep him still, as his glossa began to work its way into his valve. The deep-set sensors inside began to come alive, sending a wave of electric bliss surging through his valve, his pelvic struts, and through the rest of his frame.
“Oh,” Primal moaned, canting his helm back and moving his servo away from Dinobot’s helm. “Oh please ,” he pleaded without really knowing what he was pleading for, other than for more of that incredible sensation.
Dinobot chuckled and then began to lick further and further inside until the lower half of his faceplate was in contact with Primal’s array. The velociraptor began to eagerly eat him out, the hunger in his red optics that of a mech that hadn’t had energon in eons and had come across a large cache of it.
It was almost too much for Primal, but he kept himself as steady as he could, gently rocking his hips as much as Dinobot’s grip allowed him to. “I had no idea you were so talented in this,” he said, between the sounds of his intakes hitching.
In response, Dinobot moved his servos to grasp at Primal’s thighs and move them so his legs were draped over his shoulder struts, and he tilted Primal’s hips up slightly. The new angle allowed his glossa further access. Now Primal could feel himself losing grip on the last vestiges of his control over his frame. The new reach of Dinobot’s glossa ignited a blaze that swept Primal’s circuits, making him shake and cry out as he felt overload crest-
And then Dinobot cruelly pulled himself away.
How dare the velociraptor be so cruel?! Primal made noises of desperation, uncaring that he no doubt looked and sounded so incredibly undignified - not that he’d looked dignified during this whole session anyway. All his processor cared about was getting Dinobot back in him.
Dinobot’s digits went to his pulsing anterior node, swollen and peeking out from his valve folds as the mech’s other arm slipped underneath Primal’s frame, pulling himself up so he was hovering over Primal, and pulling the Maximal Commander closer. In his lust-addled state, Optimus moved his hips to try and draw those digits inside him, into his wet valve.
“D-Dinobot,” he moaned, his servos flying out to grip the other mech’s frame. “Please. Need… I need-”
“What is it that you need, Optimus?” Dinobot rumbled from deep within his chassis, his red optics glowing brighter than normal.
Primal huffed and resisted the urge to use his servos to slap at Dinobot’s chassis. “You know what I want, more!”
The other mech smirked and then pressed his lipplates against Primal’s neck cables, purring as his digits quickened their pace on the other mech’s anterior node, eliciting a sharp litany of gasps from Optimus as he cried out for more, cried out for Dinobot to keep going and don’t stop-
“Overload for me,” Dinobot said in that low, growling voice that had always driven him wild, the vibrations exploding across his frame. “Let me hear your voice cry for me.”
He’d always had to hide how much that voice aroused him, clamping down on multiple processes that wanted to start up at the sound of it. Finally, he was able to abandon himself to the wave of lust; Primal cried out, gasping as his intakes began heaving, and the calipers in his valve clenched down on empty air as he tipped over the edge of that tortuous cliff.
Overload was blissful. His spark and his frame cried out in ecstasy, his processor was purely empty of everything except the pleasure he felt and the knowledge that it was Dinobot that had brought him to this point. He could never satiate his heats alone again. How had he gone this long without Dinobot helping him? Then he reminded himself why - he couldn’t let Dinobot know just how much he’d dreamed about this union.
“Now,” Dinobot said softly, rubbing the tips of his digits over Primal’s now incredibly wet and sensitive valve folds. “Are you ready for my spike?”
Primal nodded in desperation. “Get in me, please,” he pleaded.
Dinobot gave him a salacious smirk and then moved his frame so he was sitting back on his knees and lower legs, letting his interface panel retract.
A soft groan of relief caught Primal’s attention. He looked down between their frames, and his heat coding immediately made his cooling fans click to life. The heat obliterated the last bits of his independent thought as he took in the sight of Dinobot’s spike. Dinobot had no doubt struggled to keep his own panel locked until just now.
The length had gold plating up on the top, and a blue underside. From where he was, he could see that it was quite long and had multiple ridges. It looked girthy enough that Primal knew his valve would find it a snug fit. He held back a moan as he saw Dinobot’s servo grip at his spike, stroke it a few times, and then guide it to his valve.
A thought entered his processor, no doubt pushed in there by his heat. He wondered if the length of Dinobot’s spike would be enough to breach the entrance into his forge.
Oh, he wanted that. He wanted that so terribly and nothing would satisfy him until he got it. His processor wanted him to take every drop that Dinobot could give him and-
He managed to shut that train of thought down as Dinobot began to slide inside. Primal felt himself part around him, and his calipers adjusted to the girth of the other mech’s spike. He gasped the further that Dinobot slid in, gently as to not rush him, but Primal wanted him to just take him right then and there without abandon. Wrapping his legs around Dinobot’s waist, he nudged the other mech closer.
“You’re so wet,” Dinobot hissed between grit denate, groaning as he no doubt felt the squeeze of Primal’s calipers around his spike. “And you’re so beautiful.”
Primal felt his spark skip a pulse in response. Him, beautiful? Dinobot thought that?
He would absolutely have to address that with the other mech later, but then that line of thought was quickly taken over by the way that Dinobot’s spike fully entered him, seated perfectly and setting off all his internal valve sensors.
The tip of Dinobot’s spike nudged against the entrance to his forge. Primal sent the command for his forge to fully open to Dinobot and then lost himself into the other mech, grunting as Dinobot began a slow and steady pace of rocking into him, fragging him open. Dinobot grabbed his legs and held them in his arms, pressing them upwards towards Primal’s chassis as he began to increase the tempo of his thrusts.
“Oh,” Primal moaned, tilting his helm back as he focused all his attention on the way Dinobot’s spike slid in and out, his calipers clutching to his length as if not wanting to let him go. Dinobot put all his power into his thrusts, making Primal gasp and grasp at the ground beneath him to keep him steady. His heat coding was begging for more, but there wasn’t much more that Dinobot could do. That still didn’t stop Primal from begging, as the sensors in his valve lit up with the glorious slide of Dinobot’s spike.
The other mech didn’t seem to be faring much better when it came to mental clarity. He could tell Dinobot was slowly losing control over his mental faculties, the velociraptor hunched over and optics bright. Primal could feel the rhythm of Dinobot’s thrusts faltering from their more steady tempo to a more erratic pattern.
Primal wasn’t that much better off. He made noises that he wasn’t sure if they were moans, gasps, or verbal pleas for Dinobot to keep going. Either way, Dinobot looked down at him, and then leaned down and planted a full kiss on his lipplates. Primal wrapped his arms around Dinobot’s neck, pressing him closer and crying into the other mech’s mouth as his overload finally, finally , swept him away.
It was incredible. He could say this for just about the entire night so far, but it was incredible how his spark sang with his release, how his frame came alive and his voice sang in tune with his spark, gasping and crying out. Fire danced along his neural net in a way that it hadn’t danced in such a long time.
“That’s it, come for me,” he heard Dinobot’s voice say, mouth moving, against his lips.
“Please,” Primal gasped, pleading as the calipers in his valve clenched down and refused to let Dinobot pull back.
A moment later, Dinobot parted their kiss and groaned in release, tilting his helm back and sighing as he spent himself inside Primal. Primal curled his digits into Dinobot’s frame, catching on the seams between armor plates, and gently rocked against Dinobot, encouraging everything to spill directly into his forge. “In me, come on,” he gasped, tightening the grip his legs had around Dinobot’s waist.
The look Dinobot gave him nearly made him overload again. There was such fire and passion behind his red optics that it made Primal’s spark yearn to kiss him again, and he did, pulling Dinobot down again to press their lipplates together as Dinobot rode out the last of his own peak.
Primal couldn’t help the small noise of disappointment that escaped his vocalizer as he looked down between their frames and saw that Dinobot removing his spike had made some of their combined fluids spill out of his valve, wetting the ground between them.
“If you want as much of me in you as possible,” Dinobot growled in a low voice, and then Primal gave an undignified yelp as Dinobot grabbed him and turned him over so Primal was on his front, hips up so his body was in an arched position. “Then this will ensure everything that I give goes into you .”
Primal felt his heat coding roar at the promise. He clutched at the ground and groaned as he felt Dinobot mount him, sliding his spike in and sending pure pleasure through his frame once more.
.-.-.
“Only to me, you said. You’d only offer that to me.”
There was a small hint of amusement in Primal’s voice as now, after four rounds of Dinobot taking Primal in that cave, they lay in the afterglow in their beast modes after their frames had screamed and begged them to transform to prevent shutdown from the energon exposure. It was excellent timing too - Optimus had run through his heat, finally, as the scent he was giving off had finally dissipated and he was back to his normal scent and senses.
Dinobot gave a sigh and then sat up from his curled-up formation, looking at his commander in his optics and trying to come up with a good excuse of sorts. “Yes, well. I suppose I still feel quite indebted to you for allowing me to serve with your team, and not leaving me to my own devices.”
This time, Primal gave Dinobot a look that clearly told the velociraptor that he didn’t believe a word of what he’d said. “That’s a pretty intimate way to repay a debt you feel you owe. That and the kiss. Oh, and calling me beautiful, among other things I’m still not sure I heard in the face of, well, everything that we did.”
Groaning, Dinobot rolled his optics. “Fine, fine. You’ve forced my servo. You are indeed quite beautiful. Any mech who doesn’t see that, is blind, and I am not blind. The kiss… felt appropriate in the moment.”
In the moment. Dinobot surmised that he wouldn’t get very far with the more-than-platonic affection that his spark and mind had been feeling for the Maximal Commander for some time now. How could Optimus Primal feel the same for him? Being a Maximal of his standing, of his intelligence and beauty and personality… he must have had a plethora of prospects back on Cybertron.
“You didn’t just come after me out of concern for your commander, did you?” Primal said quietly.
Dinobot looked away and out the entrance to the cave, wondering if he could avoid the question by sprinting out of there. However, that was quickly quashed when he remembered that Primal was actually closer to the opening and not him. Optimus could very easily stop him.
“And what if it was indeed more than just concern for you as my commanding officer? What then, Optimus Primal?” Dinobot had dug his grave, and now it was time to lay in it with the honor he expected of himself and of others.
So he was incredibly shocked when Primal pulled himself closer and took his face - his beast mode face - into both his servos and gently pressed his lips against Dinobot’s.
The universe stopped breathing in that moment in time. The kisses they’d shared in the heat of passion, though pleasurable nonetheless, didn’t hold a candle to this gentle kiss he’d been gifted with from the object of his love and desire. He purred against Primal and pressed further against the other Maximal.
Primal’s servos were gentle as they moved from his face to the back of his helm, pushing them closer and closer together.
When they parted, both looked outside the cave and saw the sky starting to slowly brighten. The sun was coming up.
“I’ve dreamed a lot about you lately,” Dinobot heard Primal say quietly. “I assumed it was something that would pass, but it never quite did.”
That made Dinobot turn to face the other mech again. Primal, dreaming about him?
“I suppose what I’m trying to say is,” the Maximal Commander said as he slowly made his way to the entrance of the cave, this time seeming to avoid optic contact with Dinobot. “If you thought your sentiments were one-sided all this time… trust me.” He looked at Dinobot and gave the velociraptor a smile that could melt an icy comet. “They’re not.”
Dinobot felt his spark bloom as he trotted up to catch up to Primal. He didn’t quite know what more to say, but he assumed that the night’s activities had done all the speaking for them.
“We should perhaps go back,” he said, looking in the direction of the ship. “The others might be wondering where we went off to.”
.-.-.
“Hey Big Bot! We were just wondering where you and Dinobot-” Cheetor stopped talking and then lifted his head up, his olfactory sensors processing. “Uh… what’s that smell?”
Whatever smell Cheetor had picked up on wasn’t the remnants of Primal’s heat, nor was it anything that Dinobot hadn’t picked up on - he was likely used to it after a night together.
Rattrap and Rhinox followed into the main room after Cheetor and they immediately picked up on whatever scent the cheetah had asked about. Rhinox immediately ushered Cheetor outside, giving an excuse about needing his help on fixing something with the Axalon ’s landing gears, while Rattrap gave both Dinobot and Primal a withering look.
Primal looked ashamed for the first time in all the time Dinobot had known him. Dinobot, however, met Rattrap’s glare and bared his teeth in a slag-eating smile.
“I don’t care what you two do in your free time, but maybe make sure you’re not giving the pussycat any reason for us to give him the talk he should have already had. Yeesh ,” Rattrap hissed, shaking his helm and following Rhinox and Cheetor outside.
When Rattrap had left them alone, Dinobot gave a suggestive purr from deep within his chassis. “Shall we perhaps take this to your quarters?”
Primal thought about it for a moment, and then pulled Dinobot towards his room. “And later, to the washrack,” he replied, an eager smile in his voice.