desperate for attention

I think i'm afraid of commitment. Every time i start to get close to someone i leave them. For instance a few weeks ago i hooked up with a guy i really like and then he called me and took me out on a date. I never called him again. I don't know why, other than I'm afraid of commitment. My family is so close and i think that that might have something to do with it also, but who am i to know what i think now-a-days. What led me to this idea was Elle and I were watching an "America's Next Top Model" marathon and this girl was talking about how she had didn't like making friends and i was thinking, "who doesn't like friends?".
Maybe i don't like commitment.
Or maybe I'm just young and rash.