This is so hard...I need any and all advice?

I have never been so confused in all of my life. My boyfriend and I go back and forth between getting along wonderfully to arguing and not meeting the others needs. He is my best friend, and yet he makes me cry and worry more than anyone else. I don't want to break up with him, and I'm always afraid he is going to break up with me. He is the kind of person who likes to be alone, doesnt like to be touched, doesn't like talking, gets mad and mean real quick. I am a sensitive, loves attention and affection person, so this isnt really meshing. Yet whenever I consider leaving him I can't do it. I don't want to not be dating him, even though everyone tells me we aren't right for each other and he doesn't treat me good. But the thing about that is, I know its probably my fault, he would treat me good if I didn't get on his nerves and want stuff. Also, how can I stop worrying about why he isn't answering his phone, and if he is going to break up with me? I know this all sounds crazy but I am