Well, if he doesn't call, just assume that he is a loser. And give him a week. After that, forget it. But if you REALLY like him, maybe send a text message that says, "What's taking you so long to call me?" Wink! (It's possible that he is just nervous.)
If he gives you a blah or lame response, then move on for good.
If he gives you a blah or lame response, then move on for good.