Reuters has a study in which 17th and 18th century passages, referring to nice guys and cads were read. Then college age women were asked whether they would marry or have sex with the guys. Most appeared to say they'd marry the nice guys and sleep, short term, with the jerk. This, says the authors, proves that women are genetically engrained for these choices. I'm thinking that maybe not. For years and years whoever you slept with was your partner or you had the potential not to marry anyone. You were “ruined.” I think that the sexual revolution has a lot to do with the choices the women made.
I do think that a nice guy makes a better husband. And the sex is great too.