How long until he can get it back up?

Any of you see those movies where they're in bed, he just finished, and she's like "wow", and two seconds later he gets it up again? That's fake right?!?! That can't be possible. I do hear, however, that about an hour later they can get it up and go again. But my guy doesn't want to. Sometimes I'll even get him up but he gets bothered because he doesn't want to... He claims it doesn't feel as good the second time around so that's why he won't. Opinions on that?