dude. did u not go to high school, college, or any new year's eve event EVER? I'm gonna lay a doozie on you here, since you have apparently made it through your whole life without realizing this: WOMEN LIKE CHEATERS.
the most confident man in the world is the one who already has a great woman at home waiting for him. He can't lose. The confidence in this man is the ultimate bitch magnet. Why do you think that the cliche of guys "getting hit on by all these women whenever I wear my wedding ring" exists?
Now, this guy sounds like a fairly undesirable gent at first glance. Women do not have sex with a man 1 by 1 throughout a whole group if the man isn't either Brad Pitt-level attractive or very big though. I'm sure that this guy has a really big dick. Women's morals will go out the window if a guy is huge (for instance, the biggest penis a woman has ever had will trump her conscience in this situation, and the fact that he's married just won't matter). I think that about 80-90% of women are this way. I've known a FEW who wouldn't do it, but not many. This guy is big I'm sure. The women who are doing it... well, its really none of your concern. But know that this isn't abnormal. You haven't stumbled upon a group of super-sluts. Most women... in fact, most PEOPLE, are like that. Sad? eh, if you would like the world to be rid of liars and fakers... yes, its sad that the world will never be a pleasant place for you. Cool? shit, if you're delighted to know that women are just as willing to get busy no matter if somebody is cheating or not, then enjoy this new knowledge my friend, because the world is getting cooler for you every day!