“Do I tell him about the cheating, or keep my mouth shut?”

I would like to get something off my chest that has made me sick to my stomach since the day I found out. I work with this fella that has been messing around with a married lady… that’s on her for putting herself in that situation and not being faithful but it’s on him for continuing with it. She was recently married a couple years ago. You ask me why is this your problem?

Well coming from a marriage with a cheating spouse this kind of hit home for me. Not only did everyone lie to me that knew about my husband, but I literally tore myself apart just to find the god awful truth. If a stranger or someone that was around them when it happened would have came to me and told me, it would of saved me a lot more time and heart break.

So I am asking for advice on if I should contact him about how shitty of a wife he has, or simply keep my mouth shut. I feel bad for her husband and dislike the boy I work with, but I believe I owe it to the cheated on spouses. Please help!