So Bucky's rescued and cleared of his "crimes" and he's finally home with Steve and the Avengers (can be CA:CW compliant or not, up to the filler). He's safe now and he's supposed to be fine and healthy and happy everything. And everything seems fine on the surface. But now that he's out of immediate danger, he's wracked with trash nightmares and flashbacks and all kinds of psychological awfulness. He knows he should probably ask for help or talk to a therapist, but he doesn't know how to do that or where to start. Instead, he internalizes everything, can't sleep at all, and just basically starts to silently self-destruct.

THEN, someone else (could be Steve or Sam or any other Avenger) gets attacked/raped and starts to talk to Bucky about it... maybe because they think Bucky would understand what they're going through, or maybe just because Bucky's silent, stoic presence is comforting. At first Bucky doesn't know how to respond, but after awhile he feels comfortable enough to talk back, and they slowly help each other start to heal.

Could be within an established relationship or maybe the helping-each-other thing sparks some romance or could be an entirely gen story. Just give me lots of manly pain and FEELS and eventual mutual recovery.

+ cathartic sharing, especially including detailed descriptions of trash endured (get as graphic as you want)
++ they're unable to talk about the trash with anyone but each other