>>8670341
If talking in the ream of hentai games then what you describe is basically the Bad Ending and it's hard to follow up with "what is daily life with my divorced wife who now married the antagonist" when all the frustration is basically vented out with the divorce proceedings. Divorce is usually the end and closure of NTR, not another step deeper into the depravity.

Maybe Suzuya's Knightess Whore where you marry your sweetheart but before and even after marriage she never stops sleeping with other men (which you both agreed on because it turns you on). Everyone just visits your house and borrows your wife for a couple of days, everything is recorded.

There is also Mijiishi's The Ruins of Luxoria, where one of the ending is basically your girl marrying the Town's Mayor while still loving you because you are that much into it. But I believe in that game you were never officially married to her yourself. Also I don't think there is much content beyond the "girl marries antagonist" plot point.