I know that feeling! I broke up with my ex, tried to block him out (it worked for a little while), I started dating a guy, got married to him, have a kid with him, and guess what? I can't get my ex out of my head. I go to sleep with him on my mind, wake up with him on my mind and it's driving my crazy! Now he is married and have a kid! I really want him to be happy though. With or without me. My situation is complicated. We are both married and have kids. If he is not married I feel you should tell him how you feel. My ex lied to me he was seeing someone when he met. I just broke it off with him and never really told him how I felt. Now I wonder how it would have been if I told him. If your man is not married maybe you should let him know how you feel. If he doesn't feel the same way you feel, at least you know that he knows how you feel. Ten years down the line you don't have to wonder (like me) how he feels or if you made the right decision by keeping quiet.