The mech made sure Optimus didn't slip as he settled into the warm oil , listening as he groaned, even the sounds of contentment wound through him, watching as Orion stretched and savoured the feeling.

"And what do you intend to do tonight?"

"I could do a myriad of things to you, but tonight, let me appreciate you, let me show your fears can be put to rest."

"Heh, what are you going to do? Feed me your spike despite my fangs?"

Orion chuckled, though he kept his battle mask closed.

"I could, I'd like to be the first Decepticon you do that to. "

The mech answered as he took up a sponge and started wiping in smooth languid movements across Orions chest windows.

"You'd be the first anyone I did that to, my carrier started filing my fangs down because I kept biting at the feeding cables...which is understandable I can only imagine how much that would hurt."

The Decepticon listened but he didn't sympathise with the carrier at all.

"Did they care how much it would hurt you?"

Orion was quiet, he'd never really thought about that.

"I...think they did, but it was something that had to be done, they thought the bloodline was far enough for traits to stop showing, but it simply skipped a generation."

He made a soft sound of appreciation as his headlights were touched, his smile behind the battle mask becoming a little more fond and the mech could tell by the slight squirm.

Of course he stopped washing him, he wanted to see him smile, the way those pretty lips expressed themselves.

He knocked with a careful knuckle on his mask

"Come on , open up, I want to see your expression."

"Say please."

The mech rolled his optics and huffed with a smile of his own.

"Please."

He replied working now on the headlights on the right side, his hands coming to a stand still as he could see Orions fangs peeking in that smile.

How could Optimus be ashamed of them?

He himself was fighting not to grab him and pull him forward in a reckless kiss, even if it marked his own lips, he revelled in the thought of how delightfully dangerous it would be to do such a thing.

Optimus started to fidget as the other mech had said nothing, maybe his visitor had realised his error and that they were a terrible thing to have, he closed his mouth and sucked his lips in too quick, not used to having his fangs made a hissing sound as energon trickled from the bottom one.

Oh , oh that was not helping the mech who was watching him at all, he didn't even hold back as he climbed into the bath, catching Orion off guard as his face was held, the spread of the mechs fingers along either side of his jaw and thumbs resting on his bottom lip as he straddled him.

"Please...let me see them."

He leaned in kissing away the energon trail.

"I want to see you Pax, all of you."

"Hey now, what happened to my sponge bath?"

Orion teased , only to genuinely be surprised when he felt the sponge return to his grill, attentively cleaning its edges and each layer of metal, his cheeks going dark.

"Primus...are you just acutely aware of others weak spots?"

"I've been highly observant, watching every reaction, every public display of affection, paying attention to the way you twitch, the way your intakes shutter...your left final is more sensitive to the other...you were injured on right once. It doesn't move as much."

Orions mouth hung open and the mech stared at those pretty fangs, he wanted Orion to bite him, to leave scratch marks, he wanted to be the only mech at the end of them, but he couldn't be greedy, if he let Orion mark him in obvious places, he couldn't be so readily in his presence without giving away who he was.

Perhaps his colours would be off putting , his face , his body type, after all they were from different universes, what one found attractive in their world might be highly undesirable in another, he was just happy Pax accepted him like this.

"Say something...your voice...last time when you had your face buried between my thighs, the deep growl..."

Orion bent his legs so his thighs pressed up against his mystery mech, setting him off balance and nearly landing flush against him, he caught the edge of the bath before that happened.

Their lips but a breath apart

"Your voice had me coming undone."

It was enough for the mech to close his optics and press their lips together and slowly coax Orion to part them so he could feel the sharpness against his tongue, one hand holding his face as his other reached down, opening the Autobots chest, remembering how much he'd enjoyed the way he'd fingered his insides.

Between finger tips he massaged head rests and seat backs, to the actual seating and the flooring of his cab, his thumb scratching along the dash board.

He devoured each moan and stole glances at those beautiful fangs that Orion had been made to feel like an outcast for, kissing against them.

"If you like my voice so much, then I'll make sure to talk to you, could you imagine, in a meeting, I call you privately, you're trying your best in an Autobot conference to keep a reserved appearance..."

He kissed him again as he teased over the floor pedals, knowing a well timed rev of his engines could have him whining like last time.

"And I tell you about all the things I plan to do to you once you come back, and Autobots and Decepticons being as taboo as you make it sound, it's dangerous for us to even be playing like that..."

He pressed a finger against the gas pedal just long enough to see Orion start to arch and his mouth open , exposing once again those gorgeous fangs.

His own panel opening as he shifted to straddle a thigh, smirking as he saw Orions expression.

"I'm sure you don't mind me having my own fun?"

He purred , his hips slowly rocking, doing exactly what he'd wanted to do to Orion when he'd seen him under the shower with Warp.

"Not at all."

Orion took a blind guess at where the mechs hips were and guessed right, giving them an affectionate squeeze, he'd not expected to feel them jerk and subtly pick up the pace.

Optimus could feel the mechs node caressing along his thigh and bit his bottom lip, careful not to tear his own mouth open.

"You'd call me and tell me you want my spike, that you want to take over and ruin me?"

"Mmm perhaps you are more observant than I give you credit for Pax...but you are right."

The mech chuckled

Pleasure and humor being shared between them as fingers explored.

Drinking in the sensation of him using his thigh to get off, feeling his node swelling and lick along white metal, Orion felt his own excitement pooling down below, wondering what it would be like to have him sit on his face so he could eat him out, however the panel that opened on his own body neither of them expected.

"I...err sorry wrong panel, I was just thinking how much I wanted you to sit on my face and..."

The mech moaned loudly just at the very fucking though of sitting on that pretty mouth .

"Oh I will one day if we are able to plan more of these future meetings mmm I will be more than happy to oblige your request and as I said, feed you my spike."

"To be on my knees and have you fuck my face, like the dirty filthy autobot that I am, that better be a promise."

The mech kissed him deeply, moving Orions hands from his hips , only to then move himself so he could grab the back of Orions thighs and lift his legs so his knees were by his head.

"I don't care what panel you open, so long as I get to cum with you."

Before Orion could even respond he felt his node meeting the mechs own, pressing himself to it as they moved together.

The mech had been clever putting him in this position, It meant he could be closer to him without Orion figuring out who he was, that he could kiss him as he placed Orions hands on his aft, there was nothing there to give him away as their hips rocked together, as they moved and found themselves incapable of stopping, the slick sensation under the oil that now waved and splashed as they moved , spilling over the edges.

The mech purposely catching his lip on a fang to share an energon kiss, their glossas tasting and mingling the unbridled passion.

Orion, wanted to claw at his back, but kept his hands where they were allowed, pressing them closer as if they could sink as one into each othes plating. His optics rolling under the blindfold, thinking how in his world him being with a Decepticon was practically illegal and forbidden and here he was valve fucking one who's face he didn't even know, but Primus it was so good, so intoxicating he could feel even in the hidden identity of the mech that this Con wanted to get under his plating and consume him.

He kissed along his neck and jaw, wanting to touch him in anyway he was allowed to, only to be brought back into a kiss that was shared.

Their bodies moving faster and faster until half the oil in the bath was flooding the floor.

He felt the Decepticons breath at his audio receptor, that deep growl rumbling through him

"I don't care mmmph who you sleep with, but you're mine and I'll never let them take you back."

The possessive tone was too much, his grip denting the mechs aft metal and leaving paint streaks, his node throbbing as he overloaded and he could feel the mech follow seconds after as he rode out his overload, fast and desperate until it was a slow tracing sensation , he could almost sense the wicked smile as he kept moving and pulling out soft pathetic whimpers from him.

"Hmm do you want me to do that again Orion?"

He whispered nipping his bottom lip.

"Please...yes..."

"Good Bot, you know your manners after all."

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