In the last comment thread Rational Male regular, Glenn, had an interesting exchange that went like this:
My marriage exactly. And she really did turn on me by the time my daughter was 2, also having two miscarriages. It was as though a switch went off and she simply fucking hated me. In my case, I had too much dignity and many women who were interested in me who seemed quite fine, so I put my foot down and my ex then just began an affair with a Plan B she had in the wings (hotties always have a Plan