A/N: I SPENT HOURS ON THIS NAME, I'm not even kidding. It was so hard to come up with a name for this imagine. It definitely stands out from the titles of my other imagines but... yeah. Hope you like this imagine!

Warning(s): there are few bad words (what a surprise)

"Good morning!" You said in a chirpy voice, pushing the door of the lab open with your hip while adjusting that strap of your shoulder bag and holding a cardboard cup holder with three cups of coffee on it.

"Morning Y/N!" Bruce replied while Tony just waved to you, looking intently at the screen of the computer.

"I brought you guys some coffee." You said as you walked over to Bruce. You handed his coffee to him and he thanked you.

"You're really taking advantage of those free coupons, aren't you?" Bruce smiled and sipped his coffee.

"I sure am!" You said as you slung your bag off your shoulder and placed it on the table. You walked over to where Tony was sat at the computer. You handed him the coffee, placed your hands on the desk and leaned towards the screen. "What's up?"

Tony sighed and pressed enter on the keyboard furiously. "I don't know, I just came here today and..." He typed in his password and pressed enter again. The computer let out an obnoxiously loud alarm noise and FRIDAY's voice was heard afterwards. "Access denied. Fuck off, Tony."

Your eyes widened and you bursted out laughing. You heard Tony huff as you laughed. "I'm sorry," you apologised as you tried to calm yourself down. "I'm sorry but that is hilarious. I never thought FRIDAY would say that."

"I'd fix it myself in a second but I have other more important things to do so please do this first." He ordered and you nodded. You motioned for him to get up from the chair and sat down on it yourself. "You go do your things and I'll fix this." You shooed him and started fixing the problem.

You heard the door of the lab close and you looked up to see Tony walking away.

"You hacked his account, didn't you?" You heard Bruce ask.

You smirked and looked at him. "I couldn't resist." You said and went back to working. By the way Tony looked at you before he left, you were sure he knew it was you but he had other stuff on his mind to have the time to be angry at you.

***

You finished fixing the prank you did on Tony in mere minutes. After that you started on working on a new software, an updated version of the current one that you had. You were making some final adjustments of the day as you heard the door open.

"Hey Banner," you heard someone say. You weren't paying much attention to anything other than your work. "Is Tony here?"

"He's busy right now. Why do you ask?" You heard Bruce answer.

"My arm is acting up. I think it needs some fixing." The person said and you heard a sound just like the one that Bucky's metal arm makes. You looked up from the computer to see Bucky himself standing in the doorway and you felt your cheeks heat up instantly.

"Well, you're welcome to wait," Bruce said and gestured a stool in the corner.

"I can look at the arm, if you'd like." You said and Bucky snapped his head towards you.

"Oh, uh, thanks." He muttered. "Please do if you're not busy."

You smiled and gestured him to sit on the chair and he sat down, not without taking a quick glance at you first.

You grabbed a stool and moved it next to the chair he was sat on. You placed your hands on his metal arm and took a quick look.

"So what's the problem?"

"My arm, it, uhh... It gets out of control at times. It's been acting up since yesterday. I thought it would pass in a day but it didn't. I keep wrecking stuff."

"Is that the reason why the door of the lab got ripped off yesterday while I was at lunch?" You found yourself smiling a bit.

Bucky rubbed the back of his neck with his human hand and let out an awkward chuckle. "Yes, sorry about that." He apologised but you shrugged it off. You got that fixed very soon.

You took a screwdriver in your hand. "It's alright, really. I'm going to have to open up your arm so I can see what's going on inside. Is that okay?"

Bucky nodded. "So... Do you come here often?" He asked shyly.

You looked up at him and tried to prevent yourself from laughing. You weren't sure if he was hitting on you or if he was just trying to have a polite conversation. Either way, you didn't want to make him feel embarrassed.

"Well, since I work here as a computer engineer, yeah. Every weekday, sometimes on weekends as well."

"So you come here almost every day to help out Tony and Bruce?"

"Yes. Science Squad would be nothing without me."

***

After you finished fixing Bucky's arm, he decided to stay in the lab. You didn't really mind, Bucky had made flirtatious comments the whole session while you were working on his arm which caused you to take longer than usual. You just had a huge crush on the man that was now sat on a chair in front of you while you sat on the table, looking down at him. Whenever he looked at you with that smile on his lips, you could feel your cheeks heating up.

"So do you do anything other than computer stuff?" He asked and looked around the lab.

"Well, I'm a part of the Science Squad, so I think that means I'm pretty good with science too. I help Tony and Bruce when they need me."

"What about chemistry?"

"I think I'm good with chemistry as well." You nodded, swinging your feet back and forth over the edge of the table.

"So... Are you feeling the chemistry right now?" He asked and by the look on his face that he had after he finished, he regretted saying it.

You couldn't help but giggle and felt that heat creep up on your cheeks again. "I think so." You replied shyly which made Bucky chuckle as well.

On the other side of the lab, Bruce was looking at you two with a grimace on his face. He took out his phone, called Tony and waited for him to answer, never taking his gaze off of you and Bucky.

Tony answered after three calls with a snap, "What?"

"You need to come here." Bruce said simply. "Now."

"Why?"

"It's about Y/N."

"What?" Tony yelled. "Is she okay? Did she get hurt?"

"No, she's fine. Something much worse has happened."

"Banner? What the hell happened?"

"Just come." He said and finally hung up the phone.

Tony rushed into the lab faster than ever before. He jogged over to Bruce. Before he could ask what was wrong, Bruce pointed to the other side of the lab. Tony followed Bruce's gaze and as his eyes settled on you and Bucky, he gasped. "Oh, God no."

The two men stared at you in horror as you brushed your hair behind your ear and laughed softly while you gazed down at Bucky.

Both, Tony and Bruce, were ready to jump down Bucky's throat any second. Just one wrong move and he'd get dragged out of the lab.

You and Bucky continued to converse for several minutes. Bruce and Tony decided to get back to work but they both still kept an eye on you and Bucky. They kept glancing at you every once in a while but neither of you noticed. You were both too into the conversation, or too into each other, to notice.

Bucky said something funny which caused you to throw your head back in laughter. As you straightened yourself up, your hair fell over your face again. As you were about to brush it behind your ears, Bucky reached out to you and brushed it for you. His fingers slid across the skin on your cheek slowly and you were staring into each other's eyes intensely. Bucky's fingers felt so soft against your skin but sadly you didn't have much time to enjoy it any longer.

Bruce and Tony came between you two and pulled Bucky up from the chair before pushing him towards the door. "Hey!" Bucky yelled out. You would have yelled out something as well but you were feeling slightly flustered from Bucky's previous actions.

"Y/N, we have to go. We have a... Meeting!" Tony yelled out as they continued to drag Bucky out of the lab.

As they finally got out of the lab, Bruce slammed the glass door shut and Tony pushed Bucky against the wall.

Bucky wasn't at all intimidated by the two other men. He was just confused. Too confused to really react in any way.

"Okay, here's the deal," Tony started and rubbed his hands together. "We saw how—," he started but got cut off by your slightly muffled yelling.

"I can see you, asshats!" You yelled. "What the hell are you doing? Let him go!" You commanded as you neared the door.

"FRIDAY, lock the lab door." Tony said quietly and you heard the door locking right before you grabbed the handle.

You turned the handle and pushed the door but it only budged slightly. You tried again, harder, and again, it only budged a little. You turned to look at Tony with fury. "Tony! You're going to open this door now or I swear I will—"

"FRIDAY, soundproof the lab." Tony told the AI again.

"Will do, Mr. Stark."

You had no idea what Tony just said so you just continued to bang on the door and yelling at Tony and Bruce. From the looks of it, it looked like you were swearing at them. It looked almost comical to the three men but that didn't distract them for too long.

Tony and Bruce both turned to Bucky again. Bucky looked down at the two men with his brows arched in surprise. In all honesty, he had no idea what was going on.

"Listen up, Barnes," Tony started. "What are your intentions with our Y/N?"

"W-what?"

"She's like a sister to us," Tony said and gestured to Bruce and himself. "Like a little sister. We need to protect her from all the douchebags that are going to break her heart."

"Douchebags?" Bucky asked and Bruce and Tony nodded. "You think I'm a douchebag?"

"Well," Bruce started and took his glasses off. "No, but we just need to make sure Y/N will be okay."

"Look, I like her. I really, really like her and have for a while. She's beautiful, sweet and funny. She's also super smart and that's kinda sexy," Bucky smirked but as he saw the glare on both Tony's and Bruce's face, he cleared his throat. "She's incredible. I'd never do anything to hurt her, I swear."

Tony and Bruce shared a look, silently asking one another if they accepted Bucky's answer. Bruce nodded slightly and Tony sighed, turning back to Bucky again. "I don't feel good about this but you do seem like you're being genuine." Bucky smiled and let out a sigh of relief. "But we'll be watching you, Barnes. One wrong move and we'll hunt your ass down." Tony warned him.

Bucky nodded in understatement and pushed himself off of the wall. Bruce and Tony also turned around to see you slamming your fist on the door, yelling what looked like profanities. Bruce and Tony just chuckled while Bucky looked slightly terrified, you were so shy and calm only few minutes ago. When you heard the door unlock you stopped abruptly and turned the doorknob, opening the door and stepping out. You slammed the door closed and turned to Tony and Bruce, giving them an angry glare. "What the hell was that?"

"Doll, don't get worked up," Bucky said gently and you found your cheeks heating up, for like the millionth time that day, from the nickname. "They were just looking out for you."

You furrowed your brows and narrowed your eyes slightly. "What do you mean?" You asked and turned to Tony and Bruce again. "I don't need you to look out for me."

"We kind of have to, Y/N." Bruce said gently. "We just don't want you to get hurt. If there's anything we can do to keep you safe," he said, waving his hand between Tony and himself, "We'll do it."

And slowly all the anger you were feeling disappeared. You couldn't help but smile a bit. "Come here." You muttered and opened your arms, inviting Bruce and Tony for a hug. They were both a bit hesitant but Bruce walked over to you quickly, Tony walking slower behind him. You grabbed Tony's arm and pulled him to you so you could hug him as well. 

"Are you hungry, by any chance?" You heard Bucky ask and you let go of the other two men.

"Yes, very hungry." You said, smiling. "You want to go eat something?"

"It's not your lunchtime yet."

"You locked me in the lab!" You turned to Tony, pointing an accusing finger at him. "I deserve this." You said and started walking away, grabbing Bucky's arm to pull him with you.

Tony and Bruce stayed still while they watched you and Bucky walk away. Bucky whispered something to you which made you laugh and nudge his shoulder with yours. It really seemed like you two were having fun with one another and Bucky did seem genuine about really liking you and not wanting to hurt you. Even despite all that, Tony and Bruce still felt protective over you.

"Were you serious about hunting him down and kicking his ass?" Bruce asked Tony when they finally entered the lab again.

"One hundred percent. You on board?"

"Absolutely."