No, karmaexpress,
They are not. This is a phrase that made John Gray very successful commercially. He is a very good salesman and motivator, just like Tony Robbins, et al. He obtained his "PhD" from a mail order university. frankly, I wouldn't sully our lovely space here with long explications on his pseudo-science.
As to the basis for my propagation of evolutionary psychology, I generally use material published by recognized social scientists, primatologists and anthropologists from accredited institutions. Said individuals have received grants, have deep scholarly knowledge in their field, have performed legitimate studies/research/field work, and take good care not to disseminate shoddy science.
As to the ladies, women cheat just like men. All you have to do is watch chimpanzees and/or bonobos to see how the female animal cheats with gusto - for a purpose. But whereas we don't give it a second thought in simians, we tend to obsess about it in humans, clearly because so much more in terms of long-term parental investment, cuckolding, establishing paternity, and other evolutionary precepts are at stake. Both men and women "cheat" from an evolutionary standpoint because they wish to increase the "genetic fitness" of the species. It's only our ingenuity [from an adaptive sense] that has introduced the pill, condoms, etc. to prevent the result from such activities to complicate further parental investment - since it's such a big commitment among humans in our post-industrial society. But you can't take the monkey out of us completely. Beneath our neocortical veneer is still that humping, grunting creature - and that goes for females too. We WILL cheat, if we've got the biology for it. This means that if and when a female is hormonally primed for it, if she sees that her investment is low and the payoff advantageous, why not? If she sees no reason for breaking up the union that she needs for the safety and well-being of her offspring, then yes, she will compartmentalize. Women and men are no different in that regard.
I've attached something for you to read. It'll give you lots more to chew on than John Gray ever would. And should your research take you further, check out books by David Buss, Donald Symons, and Sarah Blaffer Hrdy - she's made it her mission to study cheating in the female species.
Enjoy,
the Love Goddess