Does he like me...or just being friendly?

Okay, new guy at work. Very attractive. So all my female co-workers are all over him. However, although he's attractive, I am not as forward as them. He turned down their advances. Now, he started talking to me, right away. Sometimes we talk for a hours at work. He comes by cubicle all the time. Sometimes I think he's interested because he will say things like, what type of guys you like, what are you doing this weekend...etc. He smiles or says Hi every time we p each other, and their are times that if I am in another vicinity of the office, he will be there 5 minutes later! It's weird. I caught him staring at me. He also used to ask me for the lunch menu at our local diner, than I found out he never,never visited that place! Also, other co-workers that did not talk to me, talk to me now, I believe because of him and our "friendship".He hasn't asked me for my number. What should I make of this?