Sad thing is, in the US, her husband could find out, divorce her, and she'd get 50% of property plus a nice settlement or alimony for years--while she just continued on screwing multiple guys.
I do strongly disagree with the whole premise of females are programmed to "cheat." Reproduce? YES. And in nature, the female is usually just "taken" by the alpha or similar, male. The same wiring is apparent in humans. Example: Just look at SS - every d*ick at their keyboard claims to be or aspires to be the alpha male, not the beta, right? So our wiring isn't much different.
I could get into the whole biology and DNA thing, but, let me just say that cheating, affairs, and generally being scandalous are NOT innate female traits. They are LEARNED traits based on societal conditioning and/or a disorder. Reason: It is not biologically advantageous, and is morbidly dangerous for the species, for a female (especially the more evolved species) to be fluttering about recklessly exposing herself (without male protection) trying to have sex with as many males as possible. In nature, this just doesn't happen because instinctively the female knows they are the weaker sex and thus much more vulnerable and tries to stay in groups or hidden, and we are part of nature at the DNA level. It's simple to see; look at a male and female cardinal or goldfinch. The females have brownish colors for a reason (safety to promote propagation of the species) and the males are brightly colored to attract females.
So cheating and affairs actually go strongly against a female’s DNA programming. Sure, they’ll do it, usually because their emotional, not physical needs, are not being met. They are 100% learned activities. Kind of like asking a man: Who would you rather f*uck? Jessica Alba or (fat) Melissa McCarthy? Let’s say Melissa is 1000x more fun and has a 1000x better personality than Jessica Alba. Now, who would you rather f*uck? My guess is 99% of you would say Alba no matter what. 1% of you are sick and have a fat girl fetish, lol. Why Alba? Because deep in our DNA and wiring we find her features and body type to be highly attractive as a reproductive mate who would produce viable, genetically advantageous, and robust offspring. So you can’t change your DNA coding anymore than a woman can.
Cheating is a premeditated female CHOICE.