Either he is attracted to you and is trying to find an open moment to speak.
Or he is threatened by you and is trying to get dirt on you to use against you.
Or he's just really nosey.
Does a guy like you when you always notice him looking, or when he gets into your conversations like he was listening the whole time, or at times he seems like he is jealous? He says he doesn't like me but then why would he do that?
I would say yeah.