It's the battered husband syndrome...
They keep being lied to, back stabbed, betrayed, robbed and kicked in the teeth, yet they keep coming back for more.
A sucker born every minute...So damn true...
I spent seven years of misery with my first wife. A couple of years after our divorce I met and married my second wife. Wife 2 is a real doll and in a couple of months we will have had ten years of wedded bliss. There are good ones out there.