commitment??

9 or 10 months ago I was never scared to commit to anyone, I wasn't a huge fan of it but I wasn't afraid. About 9 months ago I broke up with my boyfriend for the guy I've been crazy about for about a year now. We dated for about 2 months, he made me so happy I couldn't go more than an hour without seeing or talking to him. I was head over heals for him. One day out of the blue he just unexpectedly broke up with me. I swear to god it killed me. We never had a falling out period after that, we always stayed friends. Over 2 months or so we'd always go back to eachother and have a thing but never more. Since we broke up I've been afraid to commit to another guy because I feel like I am just going to get hurt again. I don't wanna go through that kind of pain again. Now whenever there could possibly be a future with another guy I freak out and shut it down before I can get hurt, I basically hurt him before I hurt me. Now all my friends bash me for not being a person who's into commitment since I'm the "hoe" of our friend group and at school and it doesn't bother me that people think that. But recently I've started to really like this guy and I know there could be a future and I'm not scared of him hurting me but I don't know if it's what I really want. What should I do?