As I said it's not a "guy thing" but expect it to happen from some guys. Soem people are just not good at keeping dates, some are playing and from what you've said, it's hard to say either way. He may just have a busy schedule or been unlucky in things happening to come up for him lately. Could be a slew of things.

I say cautiously proceed but guard your heart. It may indeed be that he's a jerk. if you like him enough, set grounds for a date. If he's going to flake on you again, let him know on no uncertain terms you will stop waiting for him to come around. And then follow through on that if he does it again. I say give it just one ONLY one more chance and move on.