catfishin

Is it ever appropriate for a therapist to talk about his personal life to a client? For example, my friend is cheating on his wife and thinking about leaving her. His therapist told him about his divorce and how his wife had cheated on him. Are there rules or best practices about such things?

I guess my thought would be: if the therapist was cheated ON, and the client is doing the cheating, it doesn't seem like that would normalize his feelings. But then again I wasn't there so of course I only have a snippet of context.

That's definitely what it sounded like to me. If it were me, I'd feel really weird talking about my other relationship, like the therapist is judging.