(Tots nfsw cause I need some sin. Ignore this chapter of scrappy writing please.)

"Feels good doesn't it?"

"Y-yeah.."

You chuckled breathily tracing up his chassis to his neck watching as he shivered heavily under your touch.

"So receptive Optimus.~" you teased softly with a roll of your hips on his plate

He shivered at your tone and glanced around avoiding any contact to your own optics, "Y-yeah..."

You chuckled, "Not much experience in this field huh?~" you smirked softly with a tilt of your helm

You felt a gentle trail of servos trace up your thighs and cup gently at your hips. You stared in confusion at Optimus' face as he rubbed gentle circles there with his thumb digit.

"I-I may not have much experience in this field, but that doesn't stop me from wanting to please you to the best of my ability." He spoke softly finally meeting your gaze, "I want this to be special if we do this..." he pressed his forehelm to yours, "I want to be there for you and understand you... and just... just love you."

You had some how lost your voice through his kind words and gentle rubs. You didn't know how to reply even if you still had a grasp on your voice. You just stared at him coming to a realization. Optimus truly wasn't like the others.. He truly meant well for you. He wanted you to be safe and happy. For once in your onlining you found someone who actually cares for you and not just your abilities or how fast you can make them overload.

You smiled at him, "Wow..." was all you could manage

"I want you to be comfortable with this... and I don't want you to be dissatisfied either." He spoke again, "Leave now if you want and come back when your ready, I'll be waiting.."

Your spark swelled and you chuckled breathily, "Well you are definitely kinder than anybot I've ever berthed with."

He smiled softly at you and rubbed slightly larger circles on your hips, "Just know I love you no matter your choice."

You smiled and peppered his faceplates with soft kisses, "Primus. Just frag me here."

You chuckled feeling his cheek plates flare with heat.

"I-I um.." he cleared his throat pipes, "How about my berth instead?" He suggested softly, "I'm sure ratchet would not be happy finding out someone interfaced on his examination table."

You chuckled again kissing his jaw, "All true things all true things."

You yelped softly when he stood gripping your thighs and walking out of the med bay. You snickered and continued to pepper your kisses to his neckcabling as he walked towards his dorm. Every so often his form would under go a tremor when you gently kissed a cable. He reached his dorm he pushed open the door.

Almost as through you were a fragile piece of glass he placed you onto the berth pedes almost in the floor. You purred and gently kissed his chin and tugged him down as you laid back trailing kisses toward his derma.

"Are you com-comfortable?" He asked nervously as you kisses reached the corner of his intake

"Very." You spoke simply trailing a servo down the seams of his side.

He shivered at the contact with a quiet moan and a heavily flushed face. You brought your stabilizers up and trapped his waist between them with a purr. He lifted his helm a away from your storm of soft kisses to inspect you. His servos were shaking gently as he tried to figure out what to do.

You smiled softly up at him and figured he needed some guidance. Slipping your servos over his own you trailed them over your sides and to your breast plate with a soft moan. He shivered when he cupped the warm plating biting slightly on his bottom derma.

Your wings twitched, this was definitely gonna be one of the longest, most satisfying times. You could feel it in the way Optimus gingerly stroked the sensitive plate. In the way his vents hitched when he first felt it. You smiled and gently traced the seams of his armor searching for soft spots to make him squirm. There are surprisingly a lot, maybe it's just because his protoform is sensitive in the heightened state of arousal that he wasn't used to.

You arched and moaned then one of his digits brushed a soft spot near were he had cupped toe chassis.

"Ah~ frag~" you moaned softly as he stared at you flushed

Slowly gaining confidence Optimus went searching for the spot that caused that reaction. He soon found it from the shiver you made when he brushed over it again. He stiffened at the sound of an interface panel reacting and blushed harsher. You felt the mass pulse needingly at the junction between your stabilizers.

You chuckled breathily, "Seems like your ready." You teased

"I-I-I'm sorry. I-I-it wasn't-" you placed a digit over his dermas silencing his apology

"Shh.. shh.. it is alright. Just proves to me how well I'm doing.~" the look on his face was priceless as you spoke

His lust glazed optics grew half lidded as he gently took your index digit in his intake gently suckling at it. You chuckled breathily up at him casting a small glance down. He definitely wasn't  the biggest you had ever taken, but he was a fair size. You found yourself just staring at it swiping your glossa over your dermas.

A gentle bite on your digit brought your attention back to the mechs face. He released your digit and grunted as his hips bucked forward to grind against your still closed panel. You got the message and allowed your panel open and almost instantly you were rewarded with the tip of Optimus' spike. You moaned at the penetration and felt Optimus' vents catch by your audio.

"S-Sorry.. I couldn't help it.." he stammered out of breath.

You chuckled pressing your cheek his his, "Don't be, your spike his amazing.~"

You could feel the flare in his cheeks as his fans kicked on to lower his core body temperature. You moaned as he slowly pushed his hips forward until his pelvis met yours. He shuddered at the feeling of your heat siting still, or as still as his shivering form could manage, within you. You vented heavily by his audio servos slipping up and gripping at his back struts.

"C-can.. Can I move?" He asked breathlessly

You nodded, "You may.~"

You shivered gripping tighter to the lights on his upper back struts. He moaned breathily as he pulled out and pressed back into your valve in a slow simulating manner. You shuddered as all the right nodes were touched in the process.

"Ah~ Frag~" you groaned in his audio venting hard against his neck

"Am I doing okay? I'm n-not hurting you am I?"Optimus asked a waver of pleasure in his voice

"Y-yes Optimus. You're doing great.~" you vented, "Though you can move faster.~"

As per your request he began to thrusts faster groaning in the process. You felt on of his servos trail down along your still heating plating and hold onto your hip. The other you felt slip up along the arm above your helm and slip into your servo. You intertwined your digits with his squeezing it with a moan.

Optimus pace grew faster his heavy pants against your neckcabling grew heavier. You digits tightened against the siren lights on his back as you shivered. Your wings were quivering as you flicked your glossa out over his neck earning a groan.

"Harder." You demanded with a moan sucking harshly at a cable.

He complied moaning breathily. You rumbled fangs scrapping against his neck as you contemplated biting him. Fulfilling that age old instinct to mark your mate. Claim them in scent, protoform, and processor. You didn't have much time to think about it when you felt your mates intake latch onto your neck.

"Looks like someone couldn't keep their instincts in check.~" you teased earning a low rumble from the mech

You sank your own denta into his neck causing him to jerk and throw his helm back with a loud moan moving his hips harder. Your jaw tightened and optics rolled back as you felt your overload growing. You purred at the sweet tang of Optimus' energon squeezing his servo as your frame began to tense growing nearer and nearer to an overload.

You yanked you helm back feeling an almost snapping feeling as you practically screamed in your overload. The display of your release must have drawn Optimus to the edge, because as soon as your scream died down he released his own shout. It sounded much more like a battle cry as he arched in towards you his frame trembling.

You moaned as his hot fluids his your sensitive nodes and filled you. You looked you at him with a satisfied smile as he stared down at you blushing hard.

"We Need to do that more often."

(Meh sorry if it's scrap, it's like one in the morning here and I wanted sin. For those of you who did read it all, I hope you enjoyed the sin ya fellow sinner)