In need of advice from wise women!!

So I met this guy I'm embarrassed to say but we met of a dating site, we hit it off automatically he makes me laugh and I just love being around him he is such a nerd and I enjoy his company so much I really started having feelings for him, he gave me the impression he wanted a relationship and I wanted that too as well, we went to his place and well we had intercourse it was not planned I don't sleep with just anybody either I can still count on one hand on how many guys I have been with so when that happened I felt so horrible like I just gave myself away the sex was very very good kind of amazing and we started having sex often I know that I was wrong by doing that as well we were great the first month then all of a sudden he was texting me less and less then just stopped and he recently told me he was attached to me but just felt like he didn't want to be in a relationship and he wouldn't text me because he didn't want to lead me on I felt horrible but he didn't know that. So my question is what do I do any advice??? Do I stop talking to him completely or do I give him a reason why I'm going to stop talking to him?? He told me he would stay friends with me if I was most comfortable with that but I can't do that I like him to much for that. I'm hurting because I just wanted him for me and now I just feel lost so any advice would be great..