Adultery

Yes

Your STBX husband can also sue him for the same thing…

From the home page:
"Criminal Conversation
Criminal conversation is the name for a civil lawsuit sounding in tort (a kind of injury to the person) based on sexual intercourse between the defendant and the plaintiff

I HAD AN AFFAIR. HE WAS MARRIED AS WELL. WE ARE BOTH SEPARATED NOW. HAVE BEEN FOR ABOUT 5MONTHS NOW. HIS WIFE CALLED AND SAid she was going to sue me for being the other woman. can this happen? [8D]

PSIMPSO