Ok so I have a guy friend who I've known since freshman year (we're gonna be seniors next year), and he has been through ups and downs throughout the years I've known him. He's dealt with anorexia and depression, although he has gotten much better. However, I do not believe his current girlfriend is good for his mental health. First of all, when they break up, which there is no doubt in my mind that they will, he will be thrown back into a spiral of depression (that's what has happened with his previous girlfriends). However, he and this girl are very close, and she is very possessive of him. It's almost like he's her trophy boyfriend. Whenever any girls are around, including me, she won't keep her hand off him. His mood changes whenever she arrives and I'm just really worried and I don't know what to do. I love him to death and I don't want to see him get hurt. Any suggestions?