Sometimes, the idea in your head of dating someone when you have a crush, or even when you are just friends, is really wonderful. It all seems like it would be perfect. But then, when you finally start dating, you realize that it's not as perfect and Cinderella like as you imagined. Sometimes you even realize that you don't like the person that much. I just saw the movie 27 Dresses, and that's exactly what happens in the movie. I think that you have a right to do whatever you feel. He will move on, and you both can still be friends. If you think that there is a way to talk to him and try to rebuild your relationship a bit, then try it. Maybe some dates or romantic weekends together would help to light the spark again. If not though, then you should move on and so should he. Everyone deserves that have that spark in their life and to love being with their significant other. Good luck.