my best friend is dating a girl who used to be my good friend. i stopped talking to her after taking continuous body shaming from her like, “oh this would look so good on you! if only they had plus sizes, but they don’t. better hit the gym!” so i distanced myself away from her. my best friend doesn’t have the best home life and when we were fighting, he leaned on her to build him back up. now i’m afraid she’s going to hurt him like she did me and he will fall harder than he ever has before because she is the only thing holding him up. i warned him about her. despite the several eating disorders that i developed because of her and how much hurt he knows she put me through, he still started dating her. i don’t know what to do because i hate her with every fiber in my body but every single one of those fibers want him to be happy and unfortunately she makes him happy. please help