What should i do now??!!?

Well I've had Anorexia and Depression for a long time (Anorexia since I was 10) But since I've been hanging out with these two girls they have made me feel left out and more depressed than ever. Since my guy friends are more attracted to one of the sisters. My best friend Travis dated the sister and now Travis doesn't even talk to me anyone. I have times when I just start to cry over that over and over again. Sometimes I have times when I think about killing myself. What should I do now?