What do I do?

So basically I've met this guy and seen him a couple of times but I'm not sure if he's like interested in me or not... but I catch him staring at me sometimes but I'm not sure if he does notice me or not... He tries to talk to me but I'm the one who makes mire conversation... I want to get his number but I am just super confused... i'm convinced that it's in my head that he is actually interested in me...