Sad Bear

Confront her - quietly. Ask her if that's what happened. You may not make her change - but if nothing else you might still give her an uncomfortable look in the mirror with the question.

Who knows what worst luck, your bad luck got you of. If she would do that to you, she not someone you want to be with anyhow. It's show lack of moral fiber, what else is she capable of doing. She probably cheat on him right now anyhow. Keep your head up