Is it noraml to fantasize about a guy friend from years ago?

I am in college and recently I have been fantasizing about a guy friend from my high school. We were normal friends back then and nothing romantic happened. He told me that he was coming to my school for a master's program, and I contratulated him (with no romantic intetion). I didn't find him attractive until recently he started to appear in my (wet) dreams. I felt so happy and sweet and feminine in my first dream with him in it and it wasn't until I woke up did I realize what I had dreamed about. It was the first time I started to question my feelings toward him, and I would fantasize about him coming over to my place and getting intimate. To be honest, he is sometimes a bit "know it all" and arrogant, which annoys me. When I think about it logically, I don't find him that atttractive. But when the night falls and I am lying on my bed alone, my fantasies dominate me and I want him to be inside me :P. Do I have a crush on him? Is it normal to feel this way?