Omar Gilith at the University of Kansas says that men seek more mates in a threatening environment just in case they need to keep their options open in a biological drive for survival.
Helen Fisher said that women's excellent 'web thinking' developed in response to our female ancestors having to contend with a myriad of threats while rearing children in a dangerous environment.
So which would you rather have to cope with in a recession, your philandering man telling you he is playing away for survival or your multi-tasking lady telling you that she is protecting her offspring? (Oh, and by the way apparently women are better able to tolerate ambiguity....)
Get some balance in your life!