There is a few ways that you can tell if your wife is cheating on you. You can usually tell if she stops talking to you, flirt with someone or if she just tells you.
Stay out of it...
Are you the person they were cheating or was it someone else? If someone was cheating you, I would say I didn't want to be their girlfriend (or boyfriend if you are a guy) anymore and that I saw them cheating. If it is someone else that was being cheated, I would tell the person who is being cheated and tell the person what I saw the person do.
She don't wanna have sex with you like that anymore
When someone is categorized as a wife's lover, it means that the person loves someone's wife. This also mean that the wife loves him back and this is considered cheating.
lol...the only way to do that without cheating is to tell her and get her approval, otherwise, its cheating.
tell them you don't know that their girl is cheating!! Unless your the guy sneaking around with her!!!
No, keep cheating and dont get caught.
tell him or her you have been cheating on them that's how
* If you are legally separated then no, you are not cheating by sleeping with someone else, but remember ... she could be doing the same thing.
For cheating on him or having sex with someone else...
No. A husband with a cheating wife is called a cuckold.
ANSWER: If this man is your friend because of his wife, then you don't have a problem confronting him. Just tell him that his wife didn't deserves to be betrayed by him. If he ignore you, then tell him that you will tell your friend. Do it in a nice ways so it will not back fires