There is this guy in my school who has a GF but looks at me a lot! I like him but does he like me?

If he does all of that, then chances are he may like you. I know plenty of guys who have gfs, but still talk and like other girls. Some times guys dont want to come out and come to you saying, hey I really like you and think your really pretty. Most guys wait for the girl to do it, which I dont like lol Id rather have a guy come up to me first. Why dont you go up to him and talk to him, I mean dont go and talk like hey I like you and all. Just talk about something yall may have in common, or something you know he is interested in to keep a good conversation going on. Gradually tell him how you feel, and let him know that. Someone has to speak up, if you dont then you may never get your chance. My bf now, I had to basically grab him cause he didnt really express his feelings like I would want him to. Guys like when a girl speaks her mind. Hope this helps you. Im sure he likes you, if he didnt, why would he keep staring at you and smiling. :)