No idea what OMW knows at this point. W claims that OMW blew up due to W's "innocent" comments on OM's FB wall. If OM spoke to his wife in glowing terms about my W (like the stuff I was hearing from my W) and then OMW saw OM chatting it up on FB with my W it's POSSIBLE that OMW blew up over that. She may not know that anything happened. From her email to W it sounds OM told OMW that my W was chasing him.
Too many "ifs." You need to speak with OM's wife directly, let her know what's going on, and get any intel from her that you can as to what's happening no her end. Let HER decide what, if anything, she then wants to do with that.
In my experience studying affairs, a cheating spouse will lie about what the other spouse knows 99%* of the time.
Puppy
*this figure includes the OM/OW lying to OUR cheating spouse, which happens VERY often!!!
