From the Chateau: The top 20% of women strongly prefer to be with the top 10% of men. The top 10% of men will spread their seed among the top 30% of women (and often more widely than that), only strongly preferring the top 10% of women when they are serious about commitment and settling down.
The hypergamy-polygyny nexus results in a shaky equilibrium where a small percentage of cads are having sex with a larger percentage of women. But these cads jump from woman to woman, or they keep multiple women as sexual outlets in a de facto harem, meeting up with each one on an irregular basis, (hence the common complaint among woman dating jerkboys that the jerks they love are never around).
What this means in practice is that one promiscuous man will date ten less promiscuous women, since each of his lovers is likely to be with only him and not sharing him with other men in a multiple concurrent sexual relationship arrangement. (Women are more averse than men are to fucking multiple lovers concurrently.)
Conclusion: yes, male promiscuity can coexist with female chastity. Or a reasonable 2016 facsimile of female chastity.
