I cannot get over my ex boyfriend and i dont think i ever will.

I just need someone to talk to and who will listen to me and give me positive and truthful advice. Well me and my boyfriend had broken up about a month ago and ever since then, we havent talk at all, not even a how are you doing, nothing. And i dont understand what ever went wrong because everything was perfect between me and him, we were so cute together and he said all these cute things to me. Then one day i acted weird not purposly but it just seemed like he was having bad day so then i didnt talk to him and let him alone. He got really mad and thats when everything started to go wrong. LIke all these unessesary things he found to get in fights with me. I tried so hard for everything to be back to the way it was but it just didnt work. Then one day he called me and told me he wanted a break. he said because he could never see me in the summer becuase he works. I ofcourse believed it and just let it be and thought maybe he would talk to me about it again. When i got back to school that Monday, he wouldnt talk to me and in class he barley talked to me. He didnt come to school on the last day so i called him the day after and he didnt pick up and never called me back. I know that he doesnt like me and i know he doesnt want to be with me but i just dont know what i did wrong. I was such a good girlfriend during our relationship, and i would do anything for him. He just i guess, didnt appriciate it. So ever since then, ive been really depressed. I cant stop thinking about him and all the good times we had. We only dated for about a month but i could not tell you how happy i was. It was the happiest month in my whole entire life. I just miss him SO much and i cant stop thinking about him. I think about him every night and i can never get him out of my head. He Is all i ever think about. And i cry about him everynight also. And when i am depressed, the only person i want to talk to is him and becuase i know that i cant, i get depressed. I want to call him so bad just to tell him i miss him and all the stuff that happened between me and him really hurt my feelings. But i know that i cant because he wouldnt answer his phone, he is just that kind of person and it would make me out to be a complete idiot. Plus, hes back with his exgirlfriend. The girl who has screwed him over alot, the slut, and the girl he compared me to when we were going out. He told me how much better i was than her. And now that hes back with her, its just kind of a huge slap in the face. He is just such a hypocrite. But i just miss him and all i want to do is talk to him. So what i am trying to say is, what do i do? and how can you help me through thi?