It was only three days since they had returned from the undercover investigation but Tony purposely avoided meeting eyes with his colleague. The tension between them was palpable but he desperately tried to ignore it since he wasn't even sure if Steve was actually into him or was just getting revenge for him fucking with his feelings in the past.

They were currently alone in the office as both were working after hours to get their cases finished. Tony was writing up the undercover assignment while trying to not allow his mind to make their kisses the only thing he wanted to think about. He struggled to recall what time they made contact with the target on their latest case but he could describe the exact way Steve's lips felt against his own. He glanced up quickly at the other man typing away at his desk oblivious and probably nonplussed to Tony's thoughts. He decided to reside himself to the fact that the taller detective was simply too good for him.

He continued typing then peered up again when a detail of the case (It happened to be the criminal's red car) made him think back to that moment where he was taken completely by surprise. Detective Stark frowned when he noticed Steve had disappeared but his belongings were still scattered around his desk. He shrugged it off and forced himself to stare at the screen until the case was completely written up. It was going well until five minutes later he realized he needed the file of a similar case they did last year. He sighed and headed towards the file room.

Opening the door, he jumped as he nearly walked straight into a large figure. Steve was leaning against the rows of shelves with his hands running through his blond hair. The two detectives met eyes for a moment and Steve quickly pulled himself together.

"Detective Stark." Steve greeted frostily.

"Rogers." He replied, "Stressed?" The man's hair was sticking out at strange angles from the frequency that he had been running his hands through it.

Wrinkles formed in between the taller man's eyebrows and around his frowning lips. He hesitated to speak so Tony interrupted.

"Did I do something wrong?" Big brown eyes grew impossibly larger. He didn't want to be told that Steve didn't like him but he couldn't live his life not knowing.

"Wrong? I thought it was my fault?" In confusion, Steve ran his hands through his hair again.

"What was your fault?"

He spoke as though his transgression was more than obvious and Tony was just playing dumb, "I made a move on you when it was unwanted."

"Unwanted? Are you kidding?"

It was that second that they finally saw each other through the haze of their misinterpretation and confusion. They'd both made assumptions and believed wrongly about the other. In that moment, the tension that had been steadily rising since they'd first kissed came pouring back at double the intensity. In the silence, the only sound was their breathing as the stared at each other; neither wanting to be the one to make the first move.

Then Tony moved. The energy he had repressed since the case being unlocked meant that he couldn't stop so he leapt forward to lock their lips together. Steve's body reacted immediately, leaning forward into Tony's embrace and kissing him back with passion.

Once they touched it seemed impossible to pull their hands away as they explored each other's bodies eagerly. Steve moaned gently against Tony's lips as he could feel a heat beginning to pool inside his belly. He guided his hands across the other man's chest keenly, feeling at the muscle hidden by the shirt.

Tony shivered, "Sounds like that really shouldn't be lawful." He mouthed Steve's bottom lip to try and elicit the noise again.

Steve played along, humming out a moan twice as loud and twice as guttural. Tony reacted straight away, pushing the other detective up against the shelving unit behind them and kissing down the man's neck. Pressed so close together they could feel the swell of the other's arousal pressing against the confinement of their pants.

The taller man grasped the other's hair to guide their lips back together. Their teeth clashed as they rushed to get closer and deepen the kiss.

Tony's hands ghosted Steve's body appreciatively. He had always known the man had a good body but feeling it properly for the first time was a completely different experience. Steve's muscles shifted under his touch in response to the sensation.

Steve moved his mouth away hesitantly, "Is this- Is this really the place?" He sighed out when Tony began sucking against his neck in a hint of what was to come.

"It's only us." He muttered as his fingers began fumbling with Steve's belt, "Nobody else in the building."

Steve nodded in understanding before he pushed Tony's hands out the way as he was taking too long and unbuckled his own belt.

Quickly, he moved onto the other man's pants but Tony stopped him, instead dropping down onto his knees with such speed that he would probably develop bruises tomorrow.

The smaller man pushed down Steve's underwear freeing his cock which sprang up proudly. Tony hummed appreciatively, trying to hide his apprehension at the size, before taking it into his mouth and sucking.

The sudden pressure had Steve's knees weak making him grab hold of the shelves behind him to stabilise himself. He breathed deep as Tony's tongue began to circle the head, bringing out every trick he knew to provoke those sounds. Successfully, he noted smugly.

Steve's large fingers twisted into Tony's hair as he threw his head back.

The shorter detective lowered his mouth further down until his lips brushed the base of the shaft, taking the whole of Steve's impressive size into his mouth before humming encouragingly. His own member was pressing up with increasing discomfort as Steve's reactions were doing all sorts to the heat in his lower stomach.

It was soon after that he could tell Steve was coming close due to the way he was struggling to control the bucking of his hips. Stark pressed his hands against the firm hips to try and steady the other man.

"Tony!" Steve groaned with increasing intensity in time with his pants for air. His grasp of Tony's hair got tighter.

The smaller man couldn't recall the last time a partner had been so responsive and that fact had his cock demanding attention even more. He placed his own hand on his penis and began jerking, hurried strokes in an attempt to keep in time with Steve. He moaned at the sensation which triggered the same response from the standing man.

Moments later, Steve was coming with the cry of Tony's name on his lips. He slipped down so they were both on the floor and grabbed Tony's lips in his and kissed him passionately while his hands aided Tony. The darker haired man huffed and stammered against Steve as he came soon after. They leant against each other, their breath mingling, as the took a moment to collect themselves.


The second the moment had passed Steve felt like a fool. They were kneeling on the floor of the files room together, sweaty and out of breath. It suddenly dawned on him that anyone could enter the room at any moment as the precinct is a rather public place. He could feel the red flushing up his neck but Tony's hand smoothed over the heating area comfortingly. Steve's brain wasn't working fast enough to allow him to figure out why it soothed him so much.

"What's wrong?" Tony asked while handing him his jacket and buckling up his own belt. He could sense Steve was already retreating back into his head where he would panic about what had just happened and their relationship. He didn't know what they were but he knew that he wanted something more.

"Nothing! It was- You were great! I just feel bad about doing it in the files room… Other people have to use this room."

Tony chuckled gently. He wasn't about to tell Steve about all the places he had done something sexual. His reputation for being promiscuous wasn't completely without basis but he wasn't ashamed of that. It did make him laugh, however, at the idea of him getting with Steve Rogers especially with all his preconceived ideas of the man. A few months ago he would have never even been able to imagine Steve doing anything even remotely naughty within the precinct confines.

"Nobody has to know. It can be between just you and me." Stark stated, wiping their sweat and mess off the floor.

"It's just so strange. I never do this kind of thing." He blushed.

Tony smirked and stated with a wink, "Nice to know I have this effect on you. Can come in handy…" He trailed off suggestive and Steve immediately knew he'd gotten himself in trouble with this one.

"Oh gosh." He covered his face with his large hands. It was definitely a bad idea giving a man like Tony such sensitive information.

They left the room awkwardly with Tony continually trying to tease and flirt with Steve but the larger man was just desperate to flee the crime scene before they got caught. Within minutes they were both miles from the precinct, heading home in an opposite direction with the other one on the mind.