well frist does he know you by your name, like is he already aquainted with you and if he is just say " Hi whats up" and maybe use "how was your weekend" or if its a class you have together maybe make fun of the teacher to him or ask him how he is doing and what he thinks of the subject ... basicly something random in that area, chances are guys usally talk when questions are asked like that, btw Guys Like Confidence girls it draws them in :)just dont be to over bearing you dont want to push the guy away
