I'm Not That Guy (Anymore) (джен)

During a mission at an old Hydra bunker, Bucky has to make a decision that changes how Steve looks at him, and it hurts. There's really no easy around it, though. Bucky isn't the same man Steve knew, and the sooner he comes to terms with that, the better.
Mild Tony and Bucky flirting ahead, no true relationships aside from the friendships they found along the way.