I have seen it happen. I'd like to say they won't last, but they have. Does the new relationship last because the other woman is determined to be everything the man's wife wasn't?
I'd like to say she can't do well with that forever. But maybe she can. Or maybe she just naturally is what the wife was not and that's why she became the other woman!
Maybe the man, after one break-up, gets tired. Divorces are nothing to play with I hear. Maybe men that stay with the other woman are too broke to go anywhere else!
I would think the other woman would get boring eventually too. And I would think that as soon as the other woman changes the least bit, the man would want to leave her.... I'd like to see the statistics on this!