It's rude to bring up someone's past mistakes.
Tony's wife cheated on his many years ago, and is asking him if she can go out with her girlfriends for some drinks.
Tony wants his girlfriend to stay in tonight.
Tony tells her that he would really prefer her to stay home with him tonight and watch some movies.
Tony asks her if it's so she can spend the night with some other guy again, and tells her not to go out.
Tony and his wife have a great time watching movies together and their relationship grows stronger.
Tony's wife grows resentful because she knows she has been faithful for years, and eventually seeks a divorce.