GUEST'S ANSWER: Matthew Price, Features Editor of The Oklahoman: Maybe just a gentle, “Hey, now, let's not be telling stories,” would give him the hint. If not, try to meet with him privately and share your concern. If he doesn't know he's embarrassing you, maybe just telling him what type of stories he tells that have embarrassed you will get him set straight for the future.
Possibly when you tell him a potentially embarrassing story in the first place, you could say, “please don't repeat this,” so that he'll have an idea from the get-go this is meant to be a private discussion between the two of you. If that doesn't work, you may have to be more selective in what you share with him.
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