Author's note. Written by me and the-writing-mew.

Warning for hot interface scenes.

Enjoy and please review.

Hours later...

Megatron gasped desperately for air as his last overload, number eight, or nine, wore off. His Optimus long ago passed out but Megatron continued nonetheless with his unconscious mate as he felt like an addict in need of a powerful narcotic when it was about the little Prime.

"Allspark allmighty...!" He panted finally sated finding some courage to pull out and away from the most perfect mech ever; then he sat on his knees and contemplated his beautiful, ravished and sprawled mate and his not-so-virgin-anymore valve; soft, raw, tender and...

...bleeding...?!

Megatron's spark gave a jump in fright and almost felt like he would purge said energy source out. "Optimus! No! My Optimus! I've hurt you!" He desperately said looking or thinking in a solution.

Frantically looking everywhere he left the berth and ran, or stumbled to the washracks and looked into the first aid's kit what might be of help...

...nothing.

Then an idea crossed his processor. He opened a secret cabinet and took a little tube which seemed to contain some kind of oil; he took some of it in his hand and returned it to the secret cabinet before closing it, then went back to the berth.

Once there he reached for the damaged valve and put it in it and all over the rim. "I'm sorry, my love..." He whispered as he fingered the other with the oil in order to soothe the possible damage.

Once he thought he finished, licked clean his fingers, moaning in delight at Optimus' taste, and then laid back next his new mate hugging him close.

"I will always love you, and cherish you, my Optimus Prime," Megatron said before allowing recharge to claim him, a recharge that was full of his mate and him making love over and over again.
...

The next day...

Optimus' systems started powering up, but something was not right; a dull ache made itself present and it started growing up until he begun moving and moaning in discomfort.

Then suddenly he on-lined his optics only to find himself trapped between two massive and powerful arms. The memories of the last day came to him like a tidal wave and he was now groaning in disgust.

Did he really do that? Acted like a cheap pleasurebot? He felt like garbage, like the worst and most disgusting being ever created! How could he act like that?!

...and the pain only intensified, exploding from his exposed valve.

'Wait a click...why is my valve bared?' Optimus thought at the feeling of something cool staining it and sometimes something warm escaping from it.

Even worse! He felt like a...a...miserable something. He didn't even know, just that he needed to get off Megatron and reach the washracks or he might purge.

But once he tried to move his legs the blossoming pain exploded with an intensity he never felt before, and cried out loud...

...calling his mate's attentions and quickly pulling him out of dream world.

"Hmm?" Megatron mumbled, still half asleep as he blinked at his whimpering mate. "Optimus?"

"It...it hurts," Optimus couldn't help but whimper, feeling so weak and helpless.

"Hurts?" Megatron repeated before the words finally registered in his processor and he came awake properly in an instant.

"Shh, it's okay my love," he said, hugging his crying mate to his chest. "Is your valve hurting?"

Optimus made a miserable affirmative sound and Megatron said.

"I gave you some oil earlier to help with any soreness of damage you might have."

"Is that why it's bared?" Optimus asked in a choked voice and Megatron nodded.

"Yes but I think you may have pulled some wires down there or strained something," he mused, smiling a little sheepishly. "We were so passionate last night my sweet, we possibly overdid it."

"What...what can I do about it?" Optimus questioned as sharp pains continued to shoot up his body.

"A massage might help with some more oil," Megatron suggested as he gently laid his mate down on the berth. Taking a pillow, he placed it under Optimus's head, helping to support him.

"And once you've rested and had some energon," Megatron continued, bringing out some oil from beside his berth and gently pushing Optimus's legs apart. "We can have a warm bath together."

The oil he was using wasn't special healing oil, this one was designed to soothe aches away and make it easier to massage. It was one he used on himself if he'd strained something while training or fighting, it did sometimes happen. When it came into contact with Optimus's thighs, it would create a soothing heat that would melt into the armour and protoform. Rubbing the oil into his hands, Megatron began to gently rub it all over the necessary places, making his mate gasp at the sensation.

"How's that?" Megatron asked with a smile as Optimus yelped slightly at a small burst of pain that was smoothed away.

"Better," he admitted, the pain was slowly leaving him as Megatron worked. His inner valve did feel less painful, less abused although he wasn't sure it would ever feel the same again. How often would Megatron want to interface with him, every night? Surely it would not be for as long every time, they would burn themselves out? But Megatron had clearly enjoyed himself and the larger war mech must have a lot of stamina so chances were he could have several more sessions like this in a row without becoming exhausted.

Well, it was his duty as Megatron's mate to give him what he wanted, no matter what.

"Good, how are you feeling now?" Megatron asked once he finished with the massage.

"Heavy..." Optimus answered and Megatron smiled kindly.

"I'm sorry if I overexcited last time... I just couldn't stop... You're just too delicious..." Said this, Megatron crawled back towards his prone form and kissed him gently before reaching down and caressed the soft rim of Optimus' valve.

Optimus' optics widened and he wanted to escape, but decided against it, he must let his master do as he wants with him, after all this was for Cybertron.

Suddenly Megatron inserted one finger inside and Optimus shrieked in pain like never before; it was so sudden and no less painful, it attacked his entire system.

Megatron pulled out and away from his mate as he burned and looked down at him in shock as this one cried. "Optimus? What...what is it? Did- did I hurt you? Tell me!"

"Hurts, hurts!" the other cried and rolled to his side only to return to his back as the pain felt worst in the other position.

"Frag!" The emperor cursed before getting his com link and called. "Hook! Get your aft in here...! When I mean here, I mean my quarters... NOW!"

He cut the connection and returned to his crying mate. "Shhhh...it's okay, shhh...the medic is coming, he will help you feel better...and tell us what's wrong...," he said the last part bitterly. "Shhh...," he tried once again caressing softly Optimus' head...and so far it wasn't working.

Why hadn't the oil he put in his valve last night worked?

As he thought about this, a new mech entered the quarters and once his optics set on Optimus, he cursed and took a syringe. Seconds later after downloading its contents into Optimus, this one calmed.

"What the frag happened?!" The old medic started looking at Megatron with accusation.

"I don't know...everything was perfect and then he said it hurt!" Megatron said in his defence as the medic frowned at him not believing him.

"Why I don't believe you, Megatron? Maybe its because I know you since the day you were sparked!" The medic barked the last part making Megatron flinch for a second. "Now, let's see what you've done..."

Minutes later after examining Optimus' valve and joints he reached a conclusion, not before taking his tool and hitting Megatron hard on his head several times. "What the frag were you thinking?! Fragging spike-head! How could you do that to a virgin?!"

"He...we were enjoying it...ouch!" Tried Megatron but he was unable to escape his personal medic's wrath.

"Virgins are virgins for a reason! And very delicate! How could you not control yourself?! You practically tore off his valve!" Hook roared and Megatron froze...

...so that was the energon that leaked out...not just the seal breaking.

"He was enjoying it...he never told me to stop..." The warlord whispered in disbelief. A haunted look appeared in his optics.

"Yeah sure," Hook said not believing a word. "I need to take him to surgery and fix what you broke, idiot!"

Hours later...
Medbay...

Optimus woke up feeling very much dizzy and his joints felt heavy...heavier than usual.

Next him was Megatron speaking to a mech...

"And I mean NO INTERFACING as he recovers, he needs all his strength and energy to do so, his valve is very delicate right now and I even had to recalibrate it, now even the smallest of your fingers will feel like hell in him, so, DON'T TOUCH HIM AND KEEP YOUR HANDS TO YOURSELF! YOU UNDERSTAND?!" The mech said making Optimus frown.

"But I..." Megatron tried and flinched again when the medic's left optic twitched.

"Unless you want him permanently damaged, DON'T touch him!" The medic insisted and Megatron grunted but agreed. That was enough for him so he turned and left.

"Optimus?" Megatron addressed him and his beautiful blue optics looked up at him making the warlord gulp and tighten his fists.

"Is...is everything okay, my lord?"

"No...I've hurt you... It was not my intention but I... I was overexcited about our bonding, I shouldn't have gone so hard because you were a virgin and were not used to it... I'm sorry..." The emperor said reaching down kneeling against his berth and hid his face against it.

Optimus could not believe what he was seeing. Maybe he was dreaming...just too many things happened and seeing the Decepticon emperor being reprimanded by another mech, plus apologising was too much to take.

Before even knowing what he was doing he reached with his hand and touched the other's head. "Its nothing, I will recover soon, my lord."

Megatron lifted his gaze and looked up at him for a few seconds before jumping him and kissed him passionately surprising Optimus even in his hazy state.

The warlord smirked at him devilishly once he released his lips. "He said I can't touch your valve for a while, he never said anything about your spike..."

"Wh- what?" Optimus flushed madly before Megatron removed the soft sheets that covered him and started rubbing his spike cover.

"Come on, love, let me see it..." He purred.

"Oh I...I...uh," Optimus stammered. Truth be told, he'd never really looked at his spike, he'd never really been into self servicing, thinking it was better to teach himself self discipline to help with his military aspirations. But Megatron was his mate and master; therefore his body belonged to him. So even though he wasn't really happy about it, he couldn't refuse.

"Very well my lord," he said softly. "You can...have it."

He released his spike cover, revealing its contents to the light. Megatron's optics widened at the sight of it.

"Is...this alright?" Optimus asked quietly as Megatron carefully reached forward to touch it.

"My love, you're bigger than I expected you to be," Megatron said, sounding very impressed. Optimus glanced down and saw that for his frame size, he was quite big, not as big as his mate but still pretty big. He actually flushed at the sight of it; he never imagined that he'd be called big.

"Thank you," he mumbled as Megatron smiled widely.

"I'm going to enjoy this," he purred, carefully stroking the spike in one hand.

"Are you sure...ooooh," Optimus groaned as Megatron began to squeeze him.

"I'm very sure," his mate said devilishly, continuing to squeeze and caress the spike he held, smirking as it started to swell.

"Just lie back and enjoy," he commanded and Optimus had little choice but to obey.

It was hard to relax as the stimulation continued but he did his best not to squirm too much least his valve hurt. But when he felt something warm wrap around it, he couldn't help gasping. He looked down to see Megatron taking his spike into his mouth and starting to suck. Now that really was surprising, he'd been expecting to do this, not the warlord Megatron.

"My...uhh," he moaned, unable to finish his sentence as arousal shot through his body.

Of course, Megatron just smirked even more as he continued. His mate tasted just as good here as he did his valve, he would happily do this while Optimus recovered. And that's just what he was going to do.

"Oh my lord," Optimus gasped, unable to stop himself, this wasn't painful, it was wonderful.

"Uhhh...!" He clamped shut his mouth with his hand as his master continued sucking him.

"Delicious..."Megatron purred darkly before giving it a long teasing lick making the spike twitch and release sweet pre-cum that was lapped greedily by Megatron.

These sensations he was receiving were so good, yet different from the ones in his valve, it was as if the spike had a life of its own but was connected at him as well...but then again the sensations of pleasure were exclusively for the spike...not the whole body as it was when doing it by the valve.

"Hnnnn...!" the younger bit back another yelp as Megatron ran his hot and wet glossia against the entire length making him buck involuntarily his hips up.

"Am I the first one to ever touch you here too?" Megatron asked before returning his mouth to suckle on the sensitive head.

As Optimus nodded out of control, Megatron smirked very pleased for this before engulfing the entire shaft and started sucking the other harder.

Optimus cried out against his own clamping hand, this was way too intense that he couldn't control it...it was going to explode in Megatron's mouth if he didn't stopped now...but he just didn't wanted him to, he might sound like a perv but he wanted, no, needed to come now!

"Gah...hmmppphhhh...!" He drowned his scream of his first ever spike overload with his hand, his optics lightened up powerfully and he could swear he saw stars just before as predicted, exploded deep and hard in his master's mouth.

Now he was panting heavily on his berth and looked down at Megatron as he continued lapping and licking him clean of transfluids; if he looked carefully he could see that the emperor had not let a single drop escape.

"What a delicious elixir my mate produces in the throes of passion, a sweet and unique essence that got me addicted once more..." He said reaching down again and licked playfully at the softening spike.

Megatron was amazed at his mate's flavour, plus the size and natural ridges and bumps it possessed his marvellous member. He wanted that sweet essence again so he stimulated his Optimus swirling his glossia sensually playing with the sensitive ridges as if he was the most delicious energon thread he ever tasted before his mouth closed around him again.

As over sensitised as Optimus was, he couldn't last long at his mate's assaults and he came again drowning his howl of release again as everything became starry and hazy.

Megatron however continued licking and swirling his glossia around him and looked up at his defenceless mate with crimson optics full of deep lust. He reached down with his hand and started touching himself before baring his own valve and inserted two fingers inside as he worked Optimus once again to full arousal.

Finally he climbed on top Optimus on the berth and kissed him firmly. "I think I'm wet, love, can you help me?" he said as if a sparkling saying he was good and deserved the candy he asked.

Optimus looked down and could not believe what he was seeing! His master had his own valve bared and wet for him. He choked with his words refusing to believe it.

Megatron smirked and pecked his lips before he positioned the hard, ridged spike to his entrance and lowered himself, impaling himself fully as his valve was the one now that engulfed his shaft.

"Uhhhhh...oooohhh..." Megatron moaned in delight as his inner sensors were so deliciously stimulated by the hard ridges and bumps his mate's spike possessed, plus the rim fluttered madly at the intense but no less pleasing stretch. He couldn't help but roll his hips lazily as his valve continued sucking the welcome intrusion.

Meanwhile, Optimus could not believe what was happening, Megatron was riding him, actually riding him. His spike was being squeezed quite thoroughly; this was much more intense than being sucked off. Not only was Megatron's valve was much hotter than his mouth but it was so tight it almost felt constrictive. But oh, this felt so good, there was absolutely no pain associated with his spike.

He found himself hoping that they could do more of this, as opposed to his valve being used.

"Megatron," Optimus moaned, unable to stop himself from using his mate's given name but said mate did not seem to even notice.

"Yess, this is good," Megatron purred as he buried more and more of Optimus's spike within his own valve. No more would he need to rely on toys or casual interfaces, he had found the bot to end all of that.

Megatron spread his legs further apart so he could take Optimus more into his valve, now properly straddling his mate. He grinned at his panting and flushed mate and started to roll his hips back and forth, allowing Optimus to repeatedly thrust into him. Soon, Optimus was returning the motion, doing his best to thrust back but lying on his back didn't help since he was much smaller than his mate. Not to mention, he still felt a little weak from everything that had happened.

"Don't stop," Megatron groaned, he wanted to feel more of his mate, especially his transfluid filling him up.

"Y-yes my lord," Optimus bit out, trying to prevent himself from moaning wantonly. It was a very difficult task.

"Good," was all Megatron said as he threw his head back to enjoy the feeling of being fragged by his wonderful mate. He started to day dream what they could do together once his mate was well enough, the different positions they could try and games.

A few more breems of thrusting, he felt the spike inside him start to swell up, stretching his valve deliciously. His mate was close to coming and he couldn't be happier. He started to buck harder, wanting to speed things along and feel his mate coming.

"Let me hear you," he told his mate."Scream my name if you come, love."

"Ah...ah...," Optimus moaned, feeling an approaching overload. Before he could even think, it was there and his spike was pumping hard into his mate's as he yelled the warlord name.

Megatron roared with pleasure as the hot liquid spilled out of him.

His valve clamped so hard that for a moment he thought he would squeeze off his mate's perfect shaft as the last waves continued on and on and he moaned rolling his hips wantonly as they wore off.

"Optimus...mmmm..." he groaned as one last little wave invaded his whole body making him shiver delightedly. "That was good..."

Without him knowing there were a few onlookers who couldn't take their optics off of the scene before an enraged Hook came stomping. "What the frag is all that noise?! What are you looking at?! Get back to work!" he kicked them all of there, medics and nurses alike before taking in the scene.

Some could swear they saw Hook's enraged aura once and this one was one of those times. Stomping inside like an earthquake he took a wrench and beat the mech sitting on the berth successfully kicking him off and away of his unconscious mate.

"What the frag, Megatron?! I've said NO INTERFACING! You afthole senseless overfragged spike head! Look what you've done!"

"Uhhh..." The emperor moaned in a combination of pain and hazy pleasure on the floor. His valve still bared and leaking sweet cum from his beloved Optimus...

...his Optimus' cum... He couldn't help but think and smirked dumbly before reaching for his valve, took some of the thick fluids and took it to his mouth savouring his mixed flavour with his mate's an flushed dreamily. He was totally out... That valve overload was the most intense he experienced ever, even more explosive than with playing with his super mode and made to order for himself dildo!

"Are you even listening to me?!" The old medic tried again the third time he watched Megatron take his fingers to his mouth and back to his valve and repeat it.

"Idiot! You drained your mate! You can seriously hurt him because to produce transfluid there is needed a huge amount of energy! That is why I said NO INTERFACING OF ANY KIND!"

Megatron could only hear muffled yellings and asked himself why Optimus's spike was not in his valve anymore?

"Are you listening?!" Hook said enraged and beat him hard against the back of his helm with his hand, that seemed to awake him.

"Hook?" He said like confused which only fuelled the elder's ire.

"NO INTERFACING WITH YOUR MATE FOR FIVE MONTHS! YOU ALMOST KILLED HIM BY DRAINING HIS ENERGY LIKE THIS, IDIOT!" Hook roared in his face.

"For five months?" Megatron exclaimed in horror that was a ridiculous amount of time to go without interfacing with his mate.

Hook glared at the Mech he'd seen grown from a little Sparkling to a powerful warlord, the one who'd managed to bring the Autobots and Decepticons together without bloodshed. He mentally sighed; Megatron had clearly fallen hard for his more delicate mate, so hard that lust was clouding his processor. Most newly bonded couples were like this, so wrapped out in their love that they were barely aware of anything outside their little world.

"Megatron," he began, a bit more calmly. "I realise that right now, all you want to do is lock yourself in a room with a large berth and stay there until you both can't move. But we are in the middle of a major transition of the Autobot planets into our empire, you must focus on that. Think of this as a chance to get back to that and sort everything out while your mate recovers. Once everything is settled, the two of you can have some time alone together, have a late honeymoon or something."

Megatron grimaced, the idea of being chaste from his mate was extremely unappealing. However, he knew the elder Mech was right, he did need to be there at the helm for his Decepticons, otherwise some dissident Autobots might try to cause trouble. The last thing he wanted was any kind of conflict, he wanted things to progress peacefully so that the new extension to his empire was preserved. Besides, if he didn't act now, the world his future (and hopefully imminent) Sparklings would be born into would not be the one he wanted them to reside in.

"You are right," he sighed heavily, looking wistfully at Optimus who was lying there in a daze, only half aware of what was happening.

"Of course I am," Hook stated firmly. "Have his own set of quarters set up during quarantine, let him learn about our culture and decide what part he can play in it as your mate."

The thought made Megatron feel miserable, but he nodded. He consoled himself that he could easily show off his mate once everything was settled; perhaps have a grand progress of his new empire, yes that sounded good.

"Very well, I will do what you say," he said with a nod. "I will have that organised while you take care of him."

As Hook nodded, Megatron bent towards his mate, murmuring. "First I will say goodbye, then go."

"Hnn," Hook said, more than ready to hit him again if he tried anything.

But Megatron just gave his mate a gentle kiss, smiling as Optimus blinked up at him.

"I have to go now my sweet," he told him softly. "If you need me, Hook will set up a video comm but I must take care of the integration of Cybertron into our empire. You rest and recover my love; we'll be together soon enough."

Optimus just swallowed and nodded, receiving another kiss before Megatron stood up. Reattaching his cod piece, he nodded to Hook before departing. His mate stared after him before looking at Hook who sighed and grabbed a scanner.

"Right, let's see what the damage is," he muttered, coming closer to Optimus to start examining him.

Optimus looked at the last place he saw his mate before finally relaxed allowing the the medic to do his job.

"I should have told him to clean you up first, you're a mess!" The medic growled making Optimus flush, but before he could answer Hook continued. "But knowing him he would have just taken you again."

"I... I can clean myself up..." Optimus whispered embarrassed making Hook shook his head.

"Look at you, you can barely form a sentence, just stay there and I'll bring someone to do that job; allspark! Megatron made a show!"

Optimus' flush darkened but then remembered what Megatron said...it was normal for 'cons to show their 'love' in public. So he'd better get used to it.

Author's note. While in quarantine, Optimus begins to feel very strange but what is the cause? Find out next time, until then.