He's sniffing for something better, and when he doesn't find it, he gets lonely and comes "home." It's not that he's so into you. It's that he's so not into being alone. Don't give him the chance to break up with you for the fourth time. (Even the idea of it sounds beneath you, doesn't it?) Reset your breakup maximum to one and move on.
- Greg Behrendt and Liz Tuccillo, He's Just Not