Fair enough... Not a nice trait though, and I'd suggest if a woman does that, then she cares far more about herself, than she does about her partner.
It always shocks me to hear about that sort of behaviour, because it shows that folk are getting married/having relationships with the wrong people, and not really getting together for the right reasons, more selfish ones, than actually wanting deep down to form a partnership based on mutual love and respect.
For me, that is the *ONLY* valid reason for two people to get married or begin a long-term relationship, so if you can't put a BIG tick in that box, then move on, and heaven forbid don't bring any kids into the world on the basis of that type of relationship, as they'll only end up suffering because of it...
Marco.