I WANT MY EX GIRLFRIEND BACK!

My ex-girlfriend we broke up like two months ago after two and a half years of good times. I had anger problems during then and it really got in the way. Don't get me wrong she wasn't perfect. I knew her since she was 11 she is now 14 we always had a connection. The problems started when i got her a promise ring she loved it at first but after awhile things got shaky. I went to all B-day party and she blew me off and talked to this one kid for a long time. He fucked with her head and she came back to me and blamed me for everything that went wrong in her life. After that she gave me the ring back but we still talked and stuff like that. After that she went out with my best friends brother while i had a new girlfriend. I tried to fight him but he wouldn't fight. After that she broke up me and my girlfriend for no reason after i told her i didn't want her back in life. I haven't talked to her since but i see her around and we still look at each other and we both care. I want her back and i don't know what to do. Any please help me out thank you.

Ask her why she blew you off at that party. If it was a reason that is OK to you, then you could ask her about starting things again. If you don't like the reason though, then don't rush into anything with her.