Apparently commitment isn’t all a man is avoiding by living with a girlfriend outside of marriage. Among cohabitating pairs, women contribute more than 70% of the couple’s income. Both formal and informal surveys indicate that in such situations, most women expect the relationship to lead to marriage, while most men do not. (Touchstone April 2006 p. 48)
Quoted from The Ivy Jungle Network Campus Ministry Update May 2006.
This seems to fit with what I have observed … how sad.