seriously, i mean if nothing else peggy has a video in the cap exhibit, that shot of the picture of her in his compass is probably legendary, and natasha is a smart smart woman.
plus y’know. she’s not even looking at the picture for more than half a second when she asks. She’s looking at STEVE.
This was always my head canon. She’s feeling him out. She keeps getting excuses why not, why he won’t date these girls, and there’s that cutie at the park that she saw Steve hanging out with, and she thought, oh, hello, maybe Cap’s batting for the other team, but then she sees his face in this scene and dares to ask, and his reaction is enough to answer. He’s not gay, though he might be equal opportunity in the sexuality department and regardless, he’s too messed up still to really be ready to talk about Peggy. Because unlike Bucky, who died and he mourned even though it was just for a short while, Peggy is still alive and Steve still feels fidelity to her, even though it’s been a lifetime for her, and she didn’t pine away alone but had a family.