That is truly a bunch of shibboleth , phrases and prejudices about "cuckold"! A marriage boil down to "cuckold sex" and nothing more is only a coexistence by a slut wife and a mentally ill person!!
So even its a fantasy it have to be believable! A piece of good advice: Beat the idiot called "friend" up or someone else do the work (money talks) and divorce the slut! Or don't let it get to that point in the first place.