help me find this manhwa!!

It's a new bl. So all I remember is that the bottom has long silver or white hair he's kinda stupid or slow smth like that and the top has short black hair... The bottom used to to date the top's sister because he has no where to go like bro is homeless.. he always dates girls to use them for this purpose so he can stay over at their place...but then he broke up with the top's sister, so the top met with the bottom and he was like "you used my sister" or something like "you took her virginity" but the thing is , the bottom never slept with her! But the top went ahead and raped him! After that his sister told him that she never slept with the bottom.. so the top apologized and told the bottom that he can rape him if that's what it takes to forgive him but the bottom didn't and now the bottom lives with the top in his apartment...I don't remember any more but I always see in the latest update pictures of the top pissing all over the bottom in the bathroom