A husband asks his co-worker to be a sperm donor because he can’t impregnate his wife, letting him stay at their house in return. When the insemination procedure fails, he lets him fuck her for real. In front of him. Pretty soon, his co-worker starts dominating him and taking over the affection of his wife.
A mysterious buff Russian man fucks the wife of a disabled old man and also their married daughter.
After her husband is defeated in a mutiny on a ship, a captain’s wife lets the mutiny leader fuck her hard, as if recognizing that he is now the new alpha male on board.