Wishing I could go back in time

So this is the first time I have signed up for a chat line, but I feel like I need some advice on what to do!! I will try and make it short so here it goes...about five years ago I met this really nice guy and I never thought I would ever see him again. Well this guy searched all over for me in my small town and ended up finding me again. I went on a few dates, and I really liked him a lot but was so scared. I ended up going to college and we still kept in contact a little bit but I let the fear get in the way. I pushed him away because I was scared and thought I wasnt good enough for him, and that he would end up finding someone else. Well after my first semester being at college I ended up transfering to a different college. This guy that I really liked was there at the college, and I found out he was dating someone else. I tried to talk to him, but I realized it was to late he had moved on. I was really hurting and I ended up dating some one which was a rebound. I ended up marrying this guy which wasnt a good thing. I have now been divorced for two years. Since I have been divorced I decided I needed to go back to school and move on with my life. I was only taking one class and the guy that I liked 5 years ago was in the next class in the same classroom after mine. I thought it was weird that I would run into him. I never talked to him. seeing him again brought back memories and it hurt. I honestly think about him a lot and wish he would give me a second chance. I know that it will never be the same (he wont chase after me). I just dont know how I will let him know that I would like to get to know him again. I also feel like since I have been divorced he wont want anything to do with me. I need some ideas of what to do and how to do it...Thanks:)