Guys-how do we forget about them?

I just asked a question about a poem, that’s the guy. I went through a lot for him. He wasn;t the cooledt guy at my school (I’ll leave it at that). And my former bestfreind started rumors like I was pregnant with him, My Brother is in his grade and he knew about him and made fun of me, then everyone said I was easy, and my other bestfreinds made fun of me. When I broke up with him finally with the fear of him thinking I made up that rumor. With the help of my friends, the rumor finally went down and people eventually forgot about it. I realized I still like him, and when I asked him out again I find out he liked the girl who spread those rumors. I was devasted. I told him I didn’t feel comftorble with that becuase we were still friends and told him why. He immediately stepped back. Over the summer we stay in contact, and right when I’m about o ask him out agian, I find out he likes my other bestfreind. SO I try to talk her into it, unfortunately she likes someone else. He gets bummed, buthey ed up being friends, though. He kept asking her out with every e-mail. One Day I get an e-mai that contains everything he says, including “I miss you, not Lily…” That’s when Idecide it’s over, But I can’t get over him! What are good ways to get over guys?