commitment issues

Growing up, I have been physically and emotionally abused by my mother. My father is an alcoholic who molested me one night last year. I have a few other stories like this. I was hurt by basically everyone close to me in my life who was supposed to keep me safe. As a result, I have really bad commitment issues. I can't keep friends for over a year or two and my longest relationship was like 2 months. I ended the 3 relationships I've been in and I honestly don't even know why because I really liked them. I also cut off a bunch of people I talked to. I liked one of the guys I cut off so much that I still look back and want to cry because he was so amazing. I just don't know if I'll ever be able to overcome this. I don't wanna die without love. I wanna get love from someone. I didn't get it from my parents so for a while I went from guy to guy (never having sex but doing just about everything else). I don't know what to do or how to stay in a relationship. Any advice?