Things aren't going like I hoped with my boyfriend

I honestly think that getting back together was the wrong decision at this point. I'm not any happier back together with him than I was when we were just friends. In fact, I think I feel worse. We are fighting a lot more than I am okay with and I am constantly getting my feelings hurt. I don't know how to break it off because he and I are so close but I don't think I can go on this way for very much longer. I gave him Loving Someone with Bipolar a month ago and he has yet to even look at the first page. I'm upset that he isn't taking things as seriously as I want him to. We are having fights all the time that I honestly think wouldn't occur if he would just read the book and realize what I'm upset about instead of him immediately getting defensive and thinking that I want another fight. I don't know what to do. I'm miserable. I love him so much but he makes me so miserable, I don't see the point. I should have just moved on when I had the chance because I don't think I can break up a second time.