
Originally Posted by
Shaun
But of course, a person isn't going to cheat if they currently have a partner who is the best they can attract. That would be downgrading, and that is silly. If you can be both the good genes guy (typically, he is physically fit and attractive, confident, and masculine) and the good provider guy (typically, he is very intelligent, usually has a high paying job or soon will have one, can and will get things if a female requires or wants them) then it is highly unlikely that a woman would be daft enough to cheat on you. But most men aren't, which is why there is the Nice Guy versus Jerk thing going on (good genes guy often being called a Jerk because he is sexually attractive to women so can be polygamous, good provider guy is often called the Nice Guy because he provides well to females). The trick, I believe, to avoiding adultery in your partner is to be the best of both worlds.
However, we're not just at the mercy of our biological imperatives. Sure, they are a huge part of us and influence us all the time, but society also influences our mating habits. Society says adultery is wrong, even if our biological imperatives temporarily make it feel right to us, so this stops a great many from indulging in it.
So, overall, adultery is not inevitable in all marriages. I'd imagine it happens in a majority of marriages, though. I've heard that males who settled down too early, before they got a chance to sow their wild oats, are particularly prone to adultery. As are females. But strong willed people aren't so vulnerable to it.