Bah! I don't know what to do!

So, here's the deal. I think I'm falling for Vinny. He is in love with me. We've had lots of conversations about this. It's official and he admitted it sober. I also admitted sober that I think I'm falling in love with him. Here's my dilemma: am I really falling in love with him? Or is it the possibility of love with someone who is crazy about me?

I still am not his girlfriend. Why? I've boiled it down to this: Sometimes he irritates the hell out of me by doing stupid things when drinking too much. I feel he drinks too much and still likes to party too much. I think he isn't mature enough. I fear he will have a mid-20's meltdown and leave me single again. I am afraid if I commit then I open myself up to the possibility of breaking up again and getting hurt. I fear I won't get hurt and we could get married. I think maybe I could be with someone better for me. He's too young, as we both graduated in 2006--me from college and him from high school. He dated a former student of mine. He was taught by some of my fellow teacher students. Beer pong is not fun for me every weekend--it seems to be for him. I don't want to be judged for whatever reason for dating him. I don't want to hurt him the way I've been hurt--however, I fear it's too late now. We'll both be hurt, whether I want to admit it or not.

So, yes, this is my dilemma...I don't know what to do. I won't commit to him. He's okay with it, but I don't know how much longer that will last. There really aren't any other men. Andy from work is still flirty, but nothing. Other guy asked me on a date but it hasn't happened yet. I just don't know....