What? Why not?

I absolutely believe that a chest-thumping neanderthal would be faithful.

After all, it's hard to club the second one while you are still dragging the first.

To be serious, I would bet more often that a "machismo" type male will cheat every time, because they overemphasize and overcompensate to prove their "masculinity."

What NG is referring to is being a real man. A man of his word, and a man of integrity.

"An expert is a person who has made all the mistakes that can be made in a very narrow field." - Niels Bohr

"Smart people believe weird things because they are skilled at defending beliefs they arrived at for non-smart reasons." - Michael Shermer

"Fair speech may hide a foul heart." - Samwise Gamgee LOTR