To not talk to someone because they're a cheat

[LittleLisa78]

At DDs dance practice I usually sit with a dad and chat, he's really nice and always spoke about his wife and family. Yesterday I saw him and he started crying - last week his wife slept with someone at their daughters birthday party, at their house. He said he's not allowed to take her to dancing anymore and that his wife will be. I've chatted to her once or twice before but have no wish to now. AIBU to be polite and say hello if she does but otherwise ignore her?

To me it's got inconsistances that would make me back off.

So his wife's cheated and because of that said he can't do the school run nor dancing in case he tells someone?

But she allowed him to do one final one... surely if you were going to do that, then you definitely wouldn't let him do one last one.
Because he's got nothing to lose by telling everyone as he will not see them again, and feelings are raw, he's still angry... much more likely to tell everyone at that last one. And he has told someone, and maybe more than one person.

I don't expect she'll care if you don't speak to her. But it would be interesting to get her side.

Sounds like you like a bit of a drama OP or you would mind your own and get on with your own life without worrying about other peoples personal business. Also, maybe have a think about why a bloke that barely knows you from adam is suddenly discussing his personal business with you? Sometimes people like to paint themselves as the victim. In most cases there are two sides to why things go wrong in a relationship. You better hope you live a blameless life or you may find people gossiping behind your back and judging you without knowing the whole story.