Another update! Stay tuned for more in the near future.
"Hey Steve," Natasha said quietly. The room was empty except for her and the small child lying unconscious in the bed, wires hooked up to him everywhere. The usually icy and emotionless assassin took Steve's tiny, frail hand in her own, marveling at how small the man she knew had been as a child, and now was again.
"I wish you hadn't gone on that mission," she said suddenly. "I wish you would learn that you don't always have to be a hero. It's okay to let people down sometimes, to let them see that you're human. Because you are. You may be the sweetest, bravest, most selfless guy I've ever met, but you're human. You're not invincible, and I wish you would stop acting like you are, because you can get hurt so easily. This is just proof of that. Proof that you won't always be able to stand up to the bad guys, that you won't always be able to beat them. You may be more than ninety years old, but you only lived like twenty years of that. You're still a kid, even when you're not literally a kid like right now. You're going to get hurt someday, and no one will be able to fix it, and you'll die, and I'll-we'll all be left here to deal with it."
She stopped talking, but the room remained as silent as before, only broken by the intermittent beeping of Steve's heart monitor.
"I miss you, Steve," she whispered. "It hasn't even been a day since you were changed, but I miss you so much." She sighed and rested her head on the bed next to him. "I never told you, or anyone else, and I didn't even want to let myself feel it, but you're like a little brother to me. I don't know what I'll do if they can't change you back." Lulled by the soft beating of his heart, Natasha slipped into a light sleep.
"Natasha. Psst, Natasha!" A voice whispered, breaking into the assassin's dreams. She blinked sleepily, stretching out her shoulder that had been stuck in a weird position. Bruce was standing in front of her, gently trying to wake her. He smiled when he saw her confused green eyes staring up at him.
"Hey, Bruce," she whispered back, standing up to stretch her legs. "What are you doing here? My shift-"
"Has been over for about three hours," Bruce finished. "I didn't want to wake you before, but the nurses need to take Steve and check him out."
"What? Why? Is something wrong?" Natasha immediately returned to Steve's side, scanning the monitors for anything out of the ordinary.
"No, no, he's fine. I mean, apart from the obvious." They both smiled a little at that, but Bruce's eyes lingered on Natasha.
"Are you okay?" he asked. She stared at him like he was crazy.
"Yeah, I'm fine," she answered. "Why wouldn't I be?" Bruce shrugged.
"Maybe the fact that you seem really jumpy right now, or that you fell asleep on Steve's bed-"
"Okay, technically, only my head was on there."
"-or that you're holding his hand." Natasha froze and looked down. It was true; her hand was wrapped around Steve's tiny little hand, which also happened to be squeezing hers back. She quickly let go, and stepped away from him.
"This does not leave this room, do you understand me, Banner? Not a word."
"Understood." Bruce smiled, preparing to dodge a punch. "But you two did look cute like that."