Will I EVER trust a man?

I recently got out of a relationship with a smart,handsome and reasonably successful Air Force officer. We were together for two years when his feelings suddenly changed and he said he didn’t love me anymore. I was devastated and until recently wasn’t sure if I could ever love another man again. Gradually, over the course of some months; I have started to come to terms with it and have decided to explore dating options again.

I’m a lucky girl. For some reason I do attract very desirable men. This guy I’m casually seeing now seems great. He’s brilliant, funny, generous and sweet. I’ve only been on a few dates with him but over the course of getting he seems like a genuinely good guy. The only problem is that because of what happened with my ex I have a hard time that ANYONE can genuinely like me.

I realize that this is paranoid and self defeating, but I’m not sure if I can ever trust another man again. He acts like he likes me and says he likes me but I keep getting nervous that he doesn’t.(just being insecure?) I think more than anything, I don’t trust myself to know the difference between a genuine person and a person who’s intentions aren’t good.

How do I get over this worrying? This guy is smart, sweet, and has his life totally together at the age of 30 with a great education and career. I’m 21 years old and attractive (so I’m told) but I’m still in college and am no where near as settled down as he is. What does he possibly see in me? I’m nervous that because of my age and the perception of me being naive he’s only going to use me for a good time. :-/