Someone did his wife and now she left him?

It all started at a party where drinking is too blame. They were all drunk and the wife wanted to go home, but the husband wants to stay and party some more. The wife ends up talking with a guy at the party and the husband tells her he doesn't give hoot what she does. She finally dissapears and when he realizes she is gone he looks for her only to find her upstairs making love to the guy that she talked with. Now she has left her husband to go live with her Mother because she claims he was one the one that did not love her, he ignored her. Who is wrong here? I say they are both wrong and that is what I told him on the phone minutes ago.