This can be seen as a missing scene in Age of Ultron. It happens at the party.

October 22nd: You both deserve a win

(Rated K, Brutasha; Romanogers)

"But never say never...", Natasha purred while locking eyes with Bruce who was standing on the other side of the bar-counter. She softly picked up her glass and walked away. Bruce was following her with his eyes, passion and longing clearly visible. Steve's voice took him back to reality: "It's nice..."

Stuttering he replied: "Wha... what... what is?"

Steve leaned on the counter: "You and Romanoff."

Immediately Bruce responded: "No... no, it is... we haven't... that wasn't."

With a soft chuckle Steve answered: "It's okay... nobody's breaking any laws. It's just she's not the most open person in the world... but with you she seems very relaxed."

Bruce had a smile on his face while talking now too: "No... Natasha, she just likes to flirt."

"I've seen her flirt... up close. It's not that. Look... as maybe the world's leading authority of waiting too long - don't. You both deserve a win", Steve tried to keep the smile on his lips while encouraging Bruce to keep things going with Nat. He looked down and nodded slightly before walking back towards the main area of the loft. He didn't hear Bruce calling after him 'What do you mean up close?'.

Steve turned right before he stepped down the stairs to all the people attending the party. He slowly walked a few meters before stopping and supporting himself against the glass-handrail. While talking a shaky breath he looked down at the people chatting and drinking in the space below him. He ran his fingers through his hair and turned around in an attempt to join the party again, but he was met with Clint standing in front of him, his arms akimbo.

Steve attempted a smile which ended up being more of a surprised frown: "Hey Clint..."

Clint eyed the other man: "Hey... what are you doing up here alone?"

Steve looked down at the people briefly before returning to Clint: "I wanted to grab a beer from the bar up here... it's not so crowded."

Clint rolled his eyes: "Come on, Steve... I was up here to answer the phone and after the call I walked over to the stairs. I arrived just in time to see your little chitty-chat with Banner."

Steve sighed and shook his head: "I... I really wanted to grab a beer, but then I saw them. Natasha was standing behind the counter and Bruce was joining her. They talked and her eyes... lit up when she spoke to him. She smiled at him and flirted a lot, but not in a teasing way, but in a rather loving way."

Clint nodded and looked down: "And you thought it was a good thing?"

Steve shrugged: "Yes... I want all of my friends to be happy."

Sighing Clint looked up again: "Of course... but you should be happy too, you know."

Steve frowned: "What do you mean? I'm just fine."

Rolling his eyes once again Clint took the beer from Steve and took a swig before returning it: "No! I'm not an idiot... Tony and Bruce are too focused on themselves to get it and Thor doesn't really pay attention to anything... but I can see the way you glance at Natasha, the looks you give her when she doesn't realize. Do you really mean what you told Bruce?"

Steve shook his head and turned to watch the people again. He spotted Natasha sitting on a couch chatting with Maria: "That's ridiculous, Barton... Nat is just a friend. And she seems to be in love with Bruce, that's great for them."

Clint buried his face in his hands for a moment: "God... This makes me so angry! You deserve a win, too, you know. It's not just others."

Steve didn't turn to face the other man while talking: "Natasha is clearly not interested in... something with me, okay?"

Clint walked over to the handrail and stopped next to Steve: "Maybe she has given up on that... but she clearly wanted to be with you before..."

Confused Steve now turned his head in Clint's direction: "How do you know?"

Clint started chewing on his bottom lip: "Well... Nat called me a year ago, when DC happened. She was devastated and I'm sure she was about to cry. I could hear that in her voice. She told me what had happened, but she didn't make any sense most of the time since she confused the chronology of things a lot. I could however understand that you had been fighting the Winter Soldier on one of the Carriers and then everything went down. They had been looking for you for two hours already when she called. She told me, sorry for the words she used 'Screw you, Barton and that you live out in the sticks! Move your fucking ass to DC now and help me!'."

Steve blinked a few times: "Really?"

Clint grinned: "Yes... I thought she would have been coming to kill me if you hadn't shown up... She cares for you a lot, Cap. But I guess she didn't know how to deal with it and moved to something... simpler."

Steve looked back down at Natasha who was chuckling about something the other woman had said: "Probably it's for the better... She's better off with Bruce. They talked a lot lately and they seem to harmonize. It's too late for her and me..."

Clint facepalmed: "Bullshit!" He paused to let Steve complain, but he stayed silent: "Steve... She wanted you, Bruce is just her replacement. It's like... planning to go on vacation in the Carribbean, but you don't have the money and it would take effort so you settle with going to Philadelphia for the weekend."

Steve smiled and turned to Clint again: "Do you just randomly think of something like that or where does it come from?"

Clint shrugged and grinned again: "I think of useless stuff like that all the time... that's my curse."

Shaking his head Steve answered: "At least you can cheer people up easily... but Clint, don't tell Nat anything, don't talk to her about it. It's good the way it is. Understood?"

Clint frowned: "It's not... for you it's not and she has to settle with 'second best'."

Steve took a deep breath: "No. We really don't need drama at the moment. I will deal with this when the scepter is back in Asgard or elsewhere safe and things get easier again."

Clint muttered: "Fine... fine. But don't ignore it until it is too late!" The archer didn't wait for an answer and stole Steve's beer away before walking down the stairs near them.

Steve sighed and watched him go before walking over to the bar to get another bottle of beer. Maybe Clint was right after all, maybe Nat did like him, but their relationship was complicated enough. They both didn't really know what kind of friends they were and they probably weren't ready to find out. He would wait until things went back to normal and then... probably then he'd talk to her.