How would a married man feel after getting caught cheating by his wife and lost 2 friendships over it?

Guilty.

You have to get angry at this man. He was married, he did the dirt on his wife and you knew from the start that you were never going to be his number one priority. He had sex with you and then he...

Each case is inndividual, you can't generalise.

Depending on the assets they have as a couple, probably not much more than the normal split. Freedom from a cheating spouse is guaranteed with divorce, though.

Unless you have concrete evidence then don't! If you do then I would try to get the husband's wife alone and then discuss the possibility of following them one night and catching them red-handed. I...