OP would love any or all of these ideas. It would be great to have problem solving on both ends go wrong in a variety of ways. I’d lean toward him trying to fight, or having been minimally compliant before only because he was plotting his rapists’ deaths. Maybe they only get him under control for the parties by telling him they’ll leave him like that if he struggles enough to annoy or embarrass them. Maybe Hydra has to make a rule that no one is supposed to be naked in front of him and no touching. All the terrible mixed feelings from touch deprivation and eventually not even remembering what’s behind the instinct to resist and hate. Any interpretation of the original prompt would be fantastic. If some fills this I will be so grateful.

Also, maybe some early stage of recovery, his partner thinks he’s a little kinky and doesn’t realize he’s trying to stop himself from panicking/lashing out? Some people have issues with mirrors, for example. Bucky trying not to explain why he doesn’t want to have sex at night without all the lights on or reacting badly to tentative suggestions about blindfolds, panicking if his partner stops talking, etc