Hello again, Rainie!
Well, older studies do not make me believe this article is that right; it is moderately clear that men's brain are one way and women's are another, for this reason, studies show that homossexual people even tend to have a brain similar to the opposite sex... so how is that article so right?
If it is, I wonder why such groundbreaking study was not taken to a relevant spot like Science or Nature instead of staying within her university.
Anyway, undoubtedly, the environment plays a huge whole in everybody's life and it obviously can deeply motivate people to betray others, but there is one thing: every human behavior is based on a result of biological facts ? like genes, hormones, brains ? + environmental factors; so still, if the environment is motivating men's brain to be like that in the last thousands and thousands of years, that's how it should be; if that could've been different, we would have several examples of different societies working like you wish.
If you consider "testosterone" a stronger hormone, you automatically accept it as prone to look for variety in sex; otherwise, you are basically saying that the 2 nuclear bombs Japan got had the potential to destroy the country, but the bombs should have destroyed a single home each, like 2 dynamites. It is like saying the potential of gravity should take you to the floor like a feather in case you jump from a building... None of the two things I said make sense, do they? Well, that's how things work.
It's simple like that: people get extremely used to what they have available all the time... then you might say: "WELL, WHY IT ISN'T LIKE THAT WHEN IT COME TO DRUGS?"
Well, it is like that: the drugs get less effective and they start to take more to compensate ? or even take stronger drugs.
Humans in general are made monogamous, they are not born like that; obviously, cultural and hormonal factors make women much less prone to be like that, but you probably already know that as soon as society gets a little less strict our 15 years old daughters end up in a bed with 3 guys at the same time and then are bullied until they commit suicide. It is sad, but extremely true.
Anyway, I not telling you that men should betray or anything like that, I just want you to have one thing in mind:
Your husband may like pornography, but he loves you and even thought he watch some shit, you should be happy because he is doing anything but watching; millions of women are betrayed everyday by men that do not see a single difference between a Playboy and a real life orgy.
At the end, you are a lucky woman unhappy because of a foolish thing, like an teenager saying "I hate my parents" because they couldn't get a video game.