Ex-boyfriend problems, friend problems, help?

[Naomi]

Okay, so it has been a little while since I have talked to my ex and I still have feelings for him, so I've been thinking about blocking my ex on facebook because I creep on his profile all the time, but the problem with that is that I see him and hang out with him at school, don't really talk to him, mostly just his friends, and the reason I hang out with them is because my other "friends" are nothing but drama queens and they annoy the crap out of me lol, but also I tried to make some new friends so I wouldn't have to be in this situation, but everytime I try to talk to someone they either ignore me or pretend they don't see me and walk away. So, I have no choice but to hang around my ex...which is awkward because he don't care about me anymore and it obviously don't help me get over him, so yeah, I have noo clue what to do and some advice would be lovely, thank you