I have another thought on this. Does it need to be the appearance of another person, or is it just the total rejection of the WS.
My story...WW has 6 month long A prior to Dday. SHe continued to contact OM (they're just friends...whatever). WW filed for D a couple weeks ago.
Finally, this weekend she stayed out til 4 AM, swearing she wasn't fooling around, OM is in Florida. I just told her I didn't believe her and that she was a liar and a cheat and she has done nothing to convince me otherwise. Also told her she wasn't a very good person by the way she was acting. Told her that I didn't understand it, she HAD a family, she HAD a husband who loved and cared for her, didn't know what she wanted but hoped she would be happy someday.
Basically, this was me telling her I didn't give a crap what she did anymore because I was through with it. I also asked her when our D could be final and why was she delaying by asking for a continuance.
Since then she has been very nice to me, a good mother, has been engaging in conversation, just a lot of change.
Now, that doesn't mean she wants to jump me, or that she has given up her wicked ways. Just that once I gave her the signal that I was kicking her to the curb and didn't need or was going to put up with her stuff, she became more engaging towards me.
My feeling, I am not going to work on or try to save our M. I am done chasing. If she wants oor M to work, than she is going to need to make a lot of changes. There are so many more women out there that are nicer, more attractive, more loving, more committed, more fun, just plain better catches than STBXW. I have checked out and I think she is sensing that.