Confused! I am looking to get advice from complete strangers. This is may a long story but bare with me......?

Someone from my past reappeared. When I say past, I don't mean we had any special connection or anything in the past. We just knew each other and that was that. I have always found him attractive thou, but never felt the need to mention it. Well recently we admitted to 1 another that we found each other attractive. If I had to guess based on past conversations he has some sort of interest and/or attraction for me, I just don’t know in what aspect. He evens remembers things that I wouldn't have thought he would remember. I just recently admitted 2 myself that I have a major crush on him. I kept ignoring the signs because I don't want to like him, but who on earth controls their own feelings? It's actually irritating me for 2 reasons...1) In past conversations he's said he enjoys being single & stuff like that & 2) I'm not sure exactly how he feels. I want 2 say something but on the other hand I would B crushed if he thought I was crazy. How should I approach this situation? Any Advice?