You know what Michelle, KDK is right. I don't know why it didn't think of it. Sit him down and in your best non-confrontational voice, tell him that you find it unacceptable for him to discuss, refer to, or mention OW in your presence. Simple. Done. If he can't handle that, Tough Sh**!!
Sorry for the bluntness but like I said yesterday, you DO NOT have to put up with that for any reason. And to be honest, I can't believe he has the stones to even try and to talk to you about that!
