Why does my crush lie & tell me he doesnt do pot?

Being a guy myself, this seems to be typical behavior of him not wanting to lose this respect from you. Which means he obviously cares about your relationship and does not want to screw it up because of some dope which is not worth losing you for. I would just not pressure him. However send hints here and there about how it wouldn't bother you if he did and has been this whole time. Just give him some time and show him he can trust you not to leave him over his smoking ways. =). hope i helped...