It's a b*tch move.. For the rest of his life, this dude will always live under "her" heal and she will always remind him of his infidelity(even 20 years down the road)....
Are you kidding me???? Takes no stones whatsoever to do this.. Only fearful submission on his part probably under some kind of duress from his wife's family(brother threatening him or something probably).. No guy worth his balls would ever do this.... Then again, no guy worth his balls would cheat on his wife in the first place....
Anyhow, I'd like to know HOW he cheated, anway? Intercourse? Fellatio? Or (gods forbid) kissing? Many women consider trivial things like flirtation as cheating....
Take it like a man: get divorced, pay child support(if kids are involved) and move on...
9/10 times, once someone cheats in a relationship, it's as good as over.... That animosity and distrust is always there no matter what you do..