Partially inspired by the Steve claiming Bucky above:
Pre-war Steve and Bucky are in a relationship. Not full on BDSM, but Steve enjoys being manhandled and taken care of, he loves being fucked, and he loves that Bucky is bigger and stronger than him but uses all that power to make him feel good.
Then, during the time Bucky is in the army, Steve gets raped. The attackers make fun of him, of how he is not a real man, jeer at his small size, how he loves taking cock. Basically, corrupt things he used to like about sex.
During the war they don't have the chance to really get into it, maybe just some covert handjobs, so the issue gets kind of avoided, but in the future, when they try to rekindle their relationship, things go sour.
Bucky is eager to take care of Steve like he used to, to use his body for something nice instead of all the murder (especially if he was raped too, and wants to have normal, good sex again). Except Steve thinks he is not supposed to want that because he is not "girly" and "weak" anymore. Give me all the self-hatred and miscommunication of Steve wanting things to get back to the way they used to be, because he did like it, but thinking he is not supposed to because it makes him weak and dirty, and that must have been how Bucky thought of him all along.
Steve thinks he is wrong for liking to bottom
Pre-war Steve and Bucky are in a relationship. Not full on BDSM, but Steve enjoys being manhandled and taken care of, he loves being fucked, and he loves that Bucky is bigger and stronger than him but uses all that power to make him feel good.
Then, during the time Bucky is in the army, Steve gets raped. The attackers make fun of him, of how he is not a real man, jeer at his small size, how he loves taking cock. Basically, corrupt things he used to like about sex.
During the war they don't have the chance to really get into it, maybe just some covert handjobs, so the issue gets kind of avoided, but in the future, when they try to rekindle their relationship, things go sour.
Bucky is eager to take care of Steve like he used to, to use his body for something nice instead of all the murder (especially if he was raped too, and wants to have normal, good sex again). Except Steve thinks he is not supposed to want that because he is not "girly" and "weak" anymore. Give me all the self-hatred and miscommunication of Steve wanting things to get back to the way they used to be, because he did like it, but thinking he is not supposed to because it makes him weak and dirty, and that must have been how Bucky thought of him all along.
Up to you if and how they deal with it.