Careful what you wish for ...

it always seems to be the hubby's idea but they don't get it once you open pandoras box all bets are off.
Yes - the hubby usually talks the wife into it, then he feels jealous/threatened by the situation and he wants the wife to quit, she refuses, and the marriage hits the rocks. Most women are more sexually flexible than most men, and are better than men at adapting to poly relationships. It's the same story again and again, but men continue to put wives into these situations without thinking things through, or trying to agree on rules with their wives beforehand.