I have had bulimia for 3 years now, which my boyfriend knows about. Recently, he put his ex up on his facebook infront of me, and i know this sounds totally ridiculous, but of all the times that he has told me before that skinny and fake is horrible, she was exactly this, and it affected me really bad and so i overdosed on laxatives, which i havent done for ages, and i ended up collapsing loosing my sight and in hospital. But im ok now (well ok as in i can see and i won't be doing that any time soon). But i think the best thing to do, is to listen to her and talk to her and be delicate with the situation, but i think that continuous questioning and telling her that you dont understand and just to stop doing it, is totally the wrong way to go, because it makes you feel more alone and more crazy! Try and research into it, whether looking through internet sights or on youtube, because it gives you a better understanding because you understanding her meanings for doing it, so then you could talk to her more in depth about it and maybe begin to help her when you understand her needs.. and never suggest Maccy D's or Pizza Hut or Chinese etc.. it drives me mad when my bf does that, because i continuously think.. are you stupid?!! wish my boyfriend would try to help me more