I don't know if I should break up with my boyfriend of seven months.?

I know that this may seem stupid because I'm only 14, but I've matured a lot faster than others because of how I grew up. I've been in love with my best friend and neighbor since kindergarten. cute, right? he was my crush all those years, but unlike other kids, that crush never went away. When I was 12 he asked me out, and that's wayyyyy to young for a relationship, so I wouldn't do anything (obviously), so he broke up with me. It crushed me and I fell apart for the next year and a half. I kind of hardened up and got over it, still wanting another chance, and I finally got it 7 months ago when he asked me out again. I was on top of the world for a few months, but I found that, as in another relationship that I ended, I am starting to grow disgusted at myself even though we never do anything bad. I hate the thought of going out with him and am embarred by him. I've contemplated breaking up with him for a while, but I love him, and I'm so afraid I'm going to regret it. I'm as torn apart now as I was when he broke up with me and went out with other girls. I know I'm strong enough to go through a break up now, but I just can't bring myself to do it. I truly do love him, but I feel that my doubts about it and the fact that I'm always thinking about breaking up with him means that it's over. He's the sweetest person ever, but he talks to so many other of his friends that are girls, and one of them is my best friend. I feel like I'm third-wheeling on their relationship sometimes, and that's really what hurts me and causes these doubts. Please help me because I need an unbiased opinion on this.