Well like the girls said..it could be so many things....cheating, drugs, or he just need plain old space.* I would wait a few days and don't push the issue..when he is ready, he'll be there.* But if this goes on for weeks then I would honestly sit down with him and tell him* what you feel.* If he doesn't want to hear it, then you know what to do..if he is willing to talk and work things out, then that is even better