How old is your cat? How long have you had him? Some cats aren't very affectionate...but I am sure there are ways to get you cat to know you better. I know that when I spend extra time with one of our cats (like Noel yesterday) they start to take much more of an interest in me. They also like it if you talk to them...I swear they listen to whatever I talk to them about, it's so cute!

Good luck!