In some sense all LBS tend to lean toward weak, needy, dependent behavior, and the WAS takes advantage of that.
On the other hand, I think acting like a victim/doormat almost invites people to treat you poorly. Not that it's right, or that cruel behavior is ever justified, but it seems that unless we all clearly lay out out boundaries, even well-meaning people will get used to trampling us.
Friends have noticed the dynamic in our marriage long before the crisis of the affair.
I think, in addition, it's not attractive to women to be around men who act like wimpy wussses.