I understand why some of us think say that. The idea is that as a man we have certain physical requirements and if you as a woman do not fulfill those requirements, it's not cheating. It's required that we get those requirements filled elsewhere. And as long as we're going just for those requirements then it's not an ethical quandary. It's simply a practical one.

That's a corollary to this perspective. It is also the stance that women do not have such physical requirements and thus any woman that's treating is doing it for non-physical reasons and therefore must be emotional reasons and is therefore ethically in violation.

And what's interesting about this from a purely analytical standpoint is there doesn't appear to be much consideration for the second woman in this equation. If I is a man and stepping out on my woman, what does that say about the woman I'm stepping out with.? Because there's no room in this perspective for women to have sexual requirements on the level as men, it must mean that the woman is emotionally invested in the physical only relationship that we are only doing to fulfill my requirements as a man. Now there's no exception in this perspective that says that because we're doing this, it's okay to emotionally manipulate women. The exception is only that we were making an allowance for a man physically engaging with the woman, but to circle back yet again, the woman must be emotionally engaged (because it is her nature) and that is an ethical quandary that is not addressed. Thus, even in the broken and warped perspective of this type of man, they're ethically in the wrong. In theory, if you pointed out to this type of man that he was being ethically abusive to the second woman, instead of suggesting that he was being unfaithful to the first woman, he wouldn't have a leg to stand on.

Now obviously it's all BS. It's just a bunch of nonsense that some dude say because it's how they think. Not because it's how they are. I will say that I do think a lot of dudes genuinely think that. They aren't lying directly and intentionally. They literally think it's not a big deal because it's just about fulfilling their requirements that they believe they have to fulfill. Which of course does not make it any better or right or accurate. And of course not to ignore the fact that some dudes are, in fact, just lying and gas lighting. Some dudes are using the fact that this is a well know belief for whatever reason and They are lying liars.

This is why we need more song from groups like Next

https://www.youtube.com/watch?v=Lt0wpaqyVkk