A/N: Gosh, Avengers blew me away. I loved the movie to bits! And I decided to write a one-shot based on it. Pairing is Bruce/OC because I love Bruce :)

Disclaimer - Nopey dopey, not mine.

The first time she saw him was during the battle with Loki and his cronies (the faceless, downright fugly aliens). He was terrifying, nobody could argue with that. He was dangerous too. But she couldn't help admiring him, being grateful, when with one fluid movement he pushed her out of the way of an oncoming bullet.

He got hit instead and she cried out then, naïvely thinking it would kill him. But it didn't, and he roared in some sort of a frenzied rage, the extent of which her mind could not possibly comprehend. With her very own eyes she watched as the seemingly unscathed Hulk returned to the battle for his life. For everyone's life.

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The second time she saw him was in S.H.I.E.L.D's HQ during a briefing. She worked there, as a mere scientist and lab assistant, so she didn't understand why she of all people would be called to a hush-hush Avengers meeting.

"Glad you could join us, Miss Tyler." Director Fury said, and she blushed a bright scarlet colour; she was known for her tardiness.

"Sorry." She mumbled as everyone present shot her some kind of a glance. There were three types of glances, she decided. The apprehensive ones (from The Black Widow and Hawkeye), the raised-eyebrow seriously? ones (Tony Stark and Thor) and the kind ones (Captain America, and Him). For the first time she got to see the man who saved her life that fateful day; for the first time, she got to see the man he actually was. Not Hulk, the beast he only rarely unleashed. And boy were there things to look at.

He seemed completely focused on what Fury was saying (unlike her; she'd pay for that later), his gaze fixed on the file he was holding. His hair was untidy (sexily untidy) but he never made a move to tuck it out of the way like most men did (cough cough TonyandSteveandClint cough cough). His body was muscular; apparently changing into a green beast from time to time gave one a gorgeous body. Or maybe it was all the running around he did, being chased down by various organisations for various reasons. The last thought made her wince.

"-and Miss Tyler will be your lab assistant, Doctor Banner." Came Fury's voice from far, far away. "Is that clear? Miss Tyler?"

"Yeah." She answered, rather dumbly, as in that precise moment Doctor Banner looked up at her. His own dark eyes clashed with her light blue orbs and she blushed profusely, once again. God, those eyes! She was pretty sure she'd do anything he asked if he just looked at her with those eyes. And yeah, she totally wasn't crushing on him. Not at all.

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The third time she saw him was the following morning, in the lab. She was late (per usual) and he was already waiting when she burst in through the door, lab coat billowing behind her.

"Sorry." She blurted out breathlessly. No plausible excuse sprang to her lips so she stayed silent, catching her breath. Doctor Banner smiled.

"Not a problem. Shall we get started?" She frowned.

"What exactly are we working on, Doctor?"

"Director Fury was talking about it in yesterday's meeting." Doctor Banner replied absent-mindedly, fiddling with some apparatus. "You were listening, right?"

She blushed.

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She saw him every day after that. He called her by her first name (Rosanna, but he preferred the endearment Rosa) and she, in turn, called him Bruce. Mostly.

"Doctor Banner?" Okay, sometimes.

"How many times will I have to tell you to call me Bruce?" Came his exasperated reply. She shrugged awkwardly.

"You're a proper scientist, I can't just call you Bruce. It has to be Doctor Banner or Doctor Bruce or-"

"Just Bruce." And he looked at her awfully, awfully intently with those dark, dark brown eyes and she thought she would melt there an then. And when he didn't look away and leaned in slightly, ever so slightly, she thought her heart would stop. His lips were millimeters away from her own, his breath ghosting over the sensitive skin. He was so, so close and they were going to...

"Oi, doc!" This wasn't the first time she wanted to kill Tony Stark.

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Things were rather awkward after that. Avoiding each other was not an option; they worked together after all. The lab suddenly became too small and they were always too close. She didn't know how to deal with this; her whole life has been devoted to S.H.I.E.L.D. No romance, no boyfriends or anything funny like that. And she tried to ignore him, honest to god she did. Ignore those little tingles she got in his presence, the blushes that graced her face whenever spoke to her and the stuttering of her replies. Except it wasn't really working.

"Rosa. Rosa." He was still calling her by that darn nickname.

"Ye- yes?"

"You seem a little vacant today. Is everything alright?" Damn, he was not making this easy for her.

"Sure. Everything's fab." Her voice sounded slightly feeble. And so the days went on; until, that is, Bruce snapped.

A/N: There shall be another part to this, do not fear. And please review because we all know you want to... *pouty face*