cheater

Once a cheat, always a cheat. There is no excuse for doing something like that and no reason you should stay with him.

Well get to know the circumstances under which the incident or event has happened, and if you are convinced that he did it deliberately and with his full conscience, then he doesn't deserve you. I hope you have been faithful to him and never cheated him. Always know that a clap takes place with two hands and never with one. You could also check on the bonafides and the intention of the other woman, before you take a final call.