Bucky, for whatever reason (denial, conditioning, survivors guilt, pre-fall trauma, coping mechanism, etc), vehemently insists that most/all of the trash happened to him at the hands of Hydra was consensual.
It goes further than "I enjoyed it/I was aroused/I came therefore it wasn't rape"; he insists over and over again that he consented to and genuinely wanted everything. Maybe he speaks of it fondly, offhandedly, and doesn't understand why everyone around him/his current partner/a random stranger is horrified.
Cue patient attempts at explaining to Bucky that what happened was rape, only to have Bucky grow more and more upset by this insistence than the memories of the rape itself.
Maybe he's got a romantic/sexual thing going on with someone else (preferably Steve) as all of this is coming to light. Steve/whoever is obviously horrified and insistent that, you know, you can't really consent under mind control. But Bucky just takes this as an affront on his independence and ability to make choices for himself - "Who are you to tell me what I wanted/want; you promised you'd never do that to me; why are you trying to twist my memories like they did" etc etc
All of this also calls into question his current ability to consent with Steve/whoever. No matter how many times Bucky insists "I want you/I want this" to his partner, they don't know if they should take his word for it. And predictably, this pisses Bucky off because, what the fuck, said partner (and just about everyone in Buckys life) have spent months and months emphatically telling me that only *he* can know/determine what he wants.
+ Bucky thinking dissociation = arousal
+ Bucky thinking flashbacks = fantasies ("I must have wanted it, I can't stop thinking about it")
++ If the partner is Steve: Steve thinking that sex with Bucky is different than it was pre war, but not being able to put his finger on why until after the "truth" comes out
+++ Or, Steve knowing perfectly well that the sex is different now - maybe for example Bucky is submissive in the present whereas he was more dominant before - but going with it anyway (until the above happens)
++++ ORRRR alternatively maybe their prewar sex was quite similar; maybe they were always kind of kinky together so it's not *totally* out of left field that Bucky wants to be slapped around and restrained. And then the "oh my God what did I do" when the learn what's going on in Bucky's brain
+++++++ Bonus if part of the reason Bucky believes it was consensual is because some times were "worse"/more actively violent than others, or if he had one or two handlers in particular who were "nicer" to him
Bucky insists trash was consensual
It goes further than "I enjoyed it/I was aroused/I came therefore it wasn't rape"; he insists over and over again that he consented to and genuinely wanted everything. Maybe he speaks of it fondly, offhandedly, and doesn't understand why everyone around him/his current partner/a random stranger is horrified.
Cue patient attempts at explaining to Bucky that what happened was rape, only to have Bucky grow more and more upset by this insistence than the memories of the rape itself.
Maybe he's got a romantic/sexual thing going on with someone else (preferably Steve) as all of this is coming to light. Steve/whoever is obviously horrified and insistent that, you know, you can't really consent under mind control. But Bucky just takes this as an affront on his independence and ability to make choices for himself - "Who are you to tell me what I wanted/want; you promised you'd never do that to me; why are you trying to twist my memories like they did" etc etc
All of this also calls into question his current ability to consent with Steve/whoever. No matter how many times Bucky insists "I want you/I want this" to his partner, they don't know if they should take his word for it. And predictably, this pisses Bucky off because, what the fuck, said partner (and just about everyone in Buckys life) have spent months and months emphatically telling me that only *he* can know/determine what he wants.
+ Bucky thinking dissociation = arousal
+ Bucky thinking flashbacks = fantasies ("I must have wanted it, I can't stop thinking about it")
++ If the partner is Steve: Steve thinking that sex with Bucky is different than it was pre war, but not being able to put his finger on why until after the "truth" comes out
+++ Or, Steve knowing perfectly well that the sex is different now - maybe for example Bucky is submissive in the present whereas he was more dominant before - but going with it anyway (until the above happens)
++++ ORRRR alternatively maybe their prewar sex was quite similar; maybe they were always kind of kinky together so it's not *totally* out of left field that Bucky wants to be slapped around and restrained. And then the "oh my God what did I do" when the learn what's going on in Bucky's brain
+++++++ Bonus if part of the reason Bucky believes it was consensual is because some times were "worse"/more actively violent than others, or if he had one or two handlers in particular who were "nicer" to him
idk how (if at all) this gets resolved but yeah