Should I try and get back with him or move on?

For the past year and a half, I’ve been in a relationship with my boyfriend. Everything seemed so perfect, up until 3 months ago, when I was having family problems and got kicked out of my house. I was staying with a close friend for the past 2 1/2 months. My boyfriend would only see me at my friends whenever it seemed convenient for him. What’s funny is that he was never like that at all, we would always see each other everyday. He made me feel, that since I didnt live at home anymore and I didn’t have my car to go see him whenever I wanted to, that he had the higher hand in our relationship because he was the one with the car and I was dependent on him to come see me. During the time I was staying with my friend, he started acting different around me, in a bad way. He slowly stopped calling me, or answered any of my calls. It made me sad. I cried alot, because I didnt know what was going on with him. So one day I decided to hack into his myspace, and I found a few messages from his cousins friend which is a female. Aparrantly, they were writing back and forth to each other for about a week. He even took her out to dinner.. (now when i read that message, I cried). About a few days later, he found out that I check his myspace. So he broke up with me. I couldn’t believe it. I know I should’ve been “fuckyou, I could do better”, but I was to in love with him, to ever leave him. I cried and cried nonstop, I called him like a crazy women! Finally 1 month later, I moved back home, and I think it had already been a week since I hadn’t called him, and this one night he randomnly called me telling me he missed me and that he loved me. And being the dumb person that I am, I got back with him. Just recently I also found out about another girl I guess that he was talking to I think. I look past all the mean things he’s done to me, all the times he’s made me cry, but now I’m confused. I don’t know if I really wanna be with him anymore, I think I just got back with him cause I felt bad for him. There’s times I think I’m in love with him, but theres also times where I just don’t get the feeling I used to have for him..I don’t know what do.. Maybe I’m scared to be alone.. I don’t know..Somebody help me!!