Reader discretion is advised – sexual content inside
Introducing genderbent Marinette, Mario and his super gay boyfriend, Adrien Agreste.
If yaoi fluff isn't your thing, I suggest you don't read.
Shout out to Scotchie and Cheeto and that au generator bot for inspiring such a thought.

"Out of all the times you had to choose to go out, and on the train, you decide to choose the time that was most busiest." Mario was practically pressed between the wall of the train and was a hairs breadth away from Adrien's chest. He had his arms crossed in front of his chest as he pouted, looking out the window of the train. Adrien looked down at the dark blue haired boy standing before him, smiling softly.

"You told me you wanted me to take you out on a date, I have to be somewhere later this afternoon, so the date had to be now." Adrien brought his hand to the boy's chin, making the slightly shorter boy look up at him. "Unless you want to wait until next week when my schedule is available." Mario jerked his chin away from his hold, still pouting slightly as Adrien shrugged.

"You know I don’t like crowded trains..." Mario muttered as Adrien smiled at his pouting boyfriend.

There were many people in the train at this time and Adrien knew that his boyfriend didn't like crowded areas as much as he did, but he really did want to take Mario out. Not only had Adrien missed his boyfriend, but deep inside the recesses of his mind, he had other reasons to see the boy. Recent wet dreams were disturbing Adrien's sleep and there wasn't anything he wanted more than to fuck the boy.

A crying toddler was heard among the crowd of people, a mother who scolded the said toddler and movement among the crowd as the mother made her way through to find a place where the kid could sit. The people shifted all around, some people bumping into others. And Adrien wasn't an exception as someone bumped into him, sending him forward as he caught himself against the glass.

Mario slowly opened his eyes and found himself in Adrien's chest, one of Adrien's arms around his waist as the other was pushed against the window. Adrien growled and looked back at the person who had pushed him, not even receiving an apology from them. Adrien rolled his eyes before looking down at Mario.

"Are you alright?" Mario blinked several times before nodding.

"I'm alright, are you okay?" Mario asked, looking up at Adrien. He nodded, glancing back over his shoulder.

"Yeah, I'm fine." He mumbled before looking down at the boy in his arms. The arm he had around the boy tightened defensively, yet his head had other things in mind. Adrien's fingers uncurled against Mario and traveled downward to cup his ass, which resulted in Mario letting out a gasp and slapping his hand away.

"A-Adrien!" Mario scolded him quietly as he tried to pull out of the arms of the blond, but to no avail. Adrien watched how Mario tried to avoid his gaze and he smiled.

“What’s the matter babe? Why are you stuttering? Cat got your tongue?” Adrien leaned close into Mario’s pink tinged ear.

“S-Stop that.” Mario hissed quietly but Adrien wasn’t going to take any of it. He knew his boyfriend very well and if Adrien didn’t take advantage of the situation now, he would deeply regret it later.

Adrien smirked and let a finger run down the boy's chest, tugging at the shirt collar and at his pant waistline. Mario flushed immediately as he took glances around to see if anyone was watching.

“You’re turned on, aren’t you?” Adrien asked in an alluring deep whisper. Mario shivered, feeling Adrien’s hand ghosting his growing erection.

“I-I-“ Mario gulped, trying to settle his already shaky breathing. “I’m not.” He tried to say in the most natural voice. Adrien’s lips quirked at his attempt and he pressed his palm against his boyfriend’s erection firmly.

“Secret kink found. I’m not going to let this one slide." Adrien let out a smirk as Mario tried to silence his gasp, Adrien straightening and looking around casually as if he hadn't done anything. Mario bit his lip as his hips rolled against Adrien's stationary hand, trying to silence himself. "Would you look at yourself? Rudding into my hand like an animal in heat. With all these people in the train, with all the prying eyes... What if someone is watching?" Adrien's voice was a low whisper as Mario let out a weak whimper.

As much as Mario knew how wrong this was, he couldn’t help how turned on he was. The thought of the two of them getting caught for doing such illicit things on a public transport should have made Mario worry and turn away from the idea, but right now, it was making him really horny.

"A-Adrien." Mario whispered, letting out a breathy sigh, Adrien allowing himself to give him a gentle squeeze, Mario's hand clutching the arm of Adrien's jacket as he tried to hold back a moan.

"Don’t you have any shame?" Adrien pressed his hand over the erection and Mario leaned forward into his jacket, stifling his moan. “You don’t, I know.”

Adrien didn’t play around when it came to Mario being turned on. It had been weeks since him and Mario got some alone time, since he got to see Mario’s blushing, lewd face and hear that whispered begging. It was a desperate need that Adrien wanted to get, to hear his boyfriend moaning his name loudly, clawing bedsheets.
But right now, they were in public and as much as he wanted to hear his loud moans, he had to hold back. Rather, Mario had to hold back because Adrien wasn’t letting him go easy. Mario let out a moan into Adrien’s neck, Adrien feeling the familiar coil of his sex drive rising as Mario began leaving little pecks on his lips.

“A-Adrien… please..” Mario’s groan was a beg for Adrien to stop.

“You know the safe word, babe.” Adrien growled lowly. “You know what to say if you want me to stop.” Adrien began to swiftly undo Mario’s belt, letting his hand slip into his pants and over his underwear.

The heat they both felt was almost scalding, Mario letting out a stuttered gasp as Adrien continue to stroke and grab over his erection. The daily calls of phone sex was never enough to replace the real heat and the pressure.

Mario very well remembered the safe word, a word the two of them used when things were going too far or going a little painful. More than often, a simple ‘stop’ wasn’t going to stop Adrien Agreste from ravishing Mario Dupain-Cheng.

Mario held onto Adrien as if his life depended on it, rocking is hips against his hand and murmuring his wants through a bit lip. Adrien groaned and dared to bring his hand to the hem of his boxers, before slipping his hand in.

It was hot, too hot and Mario’s moans were making it worse. Mario’s quiet cries weren’t cries for mercy but cries for him to be less merciful.

“You don’t know how bad I fucking want you right now.” Adrien murmured into Mario’s temple.

“W-Well maybe we should screw the date and check into a motel instead.” Mario suggested in a breathy voice between moans. Adrien smirked.

“Sounds like we wonderful idea.” Adrien continued to stroke Mario’s erection, feeling the warmth of the precum drip onto his thumb and feel it delightingly twitch in his hand.

Mario resisted everything he could to stop himself from wrapping his legs around Adrien’s waist, Adrien refraining from picking him up and pressing him against the wall and taking him right then and there.

E

verything and everyone had become a blur, until a cough startled the two of them. Adrien was quick to remove his hand and Mario fumbled to fix himself. Adrien looked towards the source of the sound, not finding prying eyes.

Adrien let out a relieved sigh; they hadn’t been caught, just someone who had a cough. He glanced down at his still flushed Mario trying to fix his coat.  Mario glanced up at him and double taked, pouting slightly.

“Don’t pout babe.” He leaned in closer to Mario’s ear. “Once we get to the motel, I won’t be gentle.”