It depends on what her and her partner believe - some people would regard that as cheating, others wouldn't. There are also of course married couples who have sex with other people, as long as they do so with the other partners consent it isn't cheating. With anything like this it's something the couple needs to discuss.
Of course but that would be cheating on someone.
Mind your own business and keep your mouth shut.
ANSWER:Could it be that he loves this woman even she isn't his wife? There are some married man who do fall in love with another woman, and the man I married was one of them.
Yes. Cheating is cheating.
Maybe the married man is feeling ashamed that he is cheating on his wife and is trying to tell you that you and him are threw.
The married men who are not worried about being seen with the woman they are cheating with are generally men that see the other woman late at night; are often never seen in public during the day or the men meet the other woman in a private area of the city or town or even in another State. The comment 'a woman in every port' can apply in some of these cases.
ANSWER: It depends on what type of friendship they have. As long as he knows that his wife know this other woman, that will be fine. But if this married man never mention to his wife about his friendship towards the other woman, that will be a no no
If the relationship is exclusive and closed, and her partner does not know what she doing with another person, that is considered cheating regardless of who she sleeps with. If she does this with knowledge and consent of her partner, then it is not. Then, it just means their relationship is open.
Cheating is cheating no matter if the woman is married or single. The only difference is the man involved feels he can have a wild affair with a married woman without commitment because she will most likely stay with her spouse and the man cheating will stay with his spouse, but if he should have an affair with a single woman she may want him to leave his wife and commit to her.
Cheating
Each case is inndividual, you can't generalise.
ANSWER: Absolutely, married man do feel the challenge of hiding his second life. The thrill of lying, sneaking around just to be with his mistress, the sex that is new to him different from his wife. And most of all what makes a married man feels better is knowing he can have another woman while he have a wife.