Maybe they have an open relationship, and she kinda accepted the fact that his libido is too high for just her.
Also let's be honest he is smoking hot guy so she might feel stunned that he chose her and is able to close an eye on him cheating or liking riding cocks.
That's a lot of maybes.
And what is she? Chopped liver? Is her, kissing his feet, and fanning him during breakfast, not enough admiration for one good looking man? So ladies, listen up! If there are any women who are dedicated to these men with looks that you feel are above average, then please don't expect these handsome, good looking men to have the human ability of self control, and to not fuck every object with a moist crevice. You must turn a blind eye and allow them to fly and spread their handsomeness with the world. You have been warned. Maybe he should feel lucky enough that he found a woman who is willing (stupid enough) to put up with all the shit that he brings into their relationship. I can assure you, there aren't many. Any successful, good-looking, confident woman who has lots of other options, won't then just settle for someone who is above average looking, but brings her headaches, heartaches, and instability, unless she has already form an emotional bond.
Yeah, it's maybe an open relationship, but it sounds like he's DL to these guys, and keeping secrets doesn’t scream open communication to me. There's a child in the picture now, so I doubt she was out finding other guys for herself whilst looking or trying to get pregnant. I can't imagine she'd be too happy if he was doing it whilst she was locked away in her tower, barefoot and pregnant, like some horror version of a gay handmaids tail. I hope he knows that his porn past will be the thing that prevents him from being DL successfully. Not a lot of people will keep quiet if they sleep with the porn stars of the past or present. Especially a self proclaimed "straight" one with a wife and a kid on the way. There will be a guy that he gets with, who will keep the reciepts, and then there will be no denying it then. It's obviously a big enough desire for him to want to risk it all. I have a strong feeling it's true for some reason, but I wouldn't burn a man at the stake with no proof. Hopefully, it's all just one big hoax. Nothing stays in the dark forever, though.