<human>: Can you condense the text into three sentences or less?

So I dated this guy. And he was great while we dated: funny, smart, caring, ect. but he has always been a kiss ass attention whore kind of guy. He dumped me because the relationship had gone bad and I tried to move on, but every time he saw me get close, he would do something to keep me (hook up with me, apologize, tell me how great I am, you get the gist). Essentially, I was manipulated a lot by him and even though I don't love or want him anymore, I can't seem to move on. He has turned many of our mutual friends (that he was always closer to) against me and I'm just so bitter about the whole situation. Every time I get close to forgiving him, I'll be undermined by my anger at being alone without all the emotional support and friends I had before the breakup. Please help I just really want to move on with my life but it's hard because it's high school and he's EVERYWHERE.
<bot>: ex and I had a messy breakup. He manipulated our friends into thinking I'm a crazy bitch. Now I'm sort of outcasted by my close friends and I feel bitter. Advice?