Good for your in-laws.
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I really do recognize that it’s their money, not my wife’s, so I don’t bat an eye. But you would not believe how often they bring it up. It amuses them to tell us that we’ll never get a dime. And, no, we have a fine relationship, live close by, see each other often, and have never had any unpleasantness of any kind. It’s a happy family situation. Just a little odd when it comes to money. But that’s just the way it goes!