I keep reading all these questions about men cheating only for sex?

I feel a man can love his wife for MANY reasons. He'll then meet a special someone who may have just a quality his wife seems to lack or she does something for him he feels he "needs" for some reason. I've known men married for yrs., had the SAME mistress for yrs. It doesn't mean he doesn't love his wife, this "mistress" has just a certain something that appeals to him in some way & he keeps seeing her on a regular basis. My ex husband remarried some 30ish yrs. ago. He's had the same mistress for almost the same length of time he's been married. Come to find out, his wife just does not like to have sex. He was one who could have sex 5 times a nite! Believe me, I KNOW!!! So whatever is lacking in his marriage, he gets from this mistress. His wife is well aware who the woman is, she worked for him for yrs., but when they go anywhere you'd never know they had problems. For them they both evidently get what they need/want from one another & don't care what goes on behind closed doors. I never know if he cheated on me, but I do know he tried to "pick up" my best girlfriend by using the SAME line on her he did when he met me. So it's possible he also cheated on me too! That's yrs. under the damn, so what they do now is none of my business. This I believe does happen with a lot of couples tho as apposed to of course those who pick up anyone strictly for a one nite stand...:)