rinseandrep said 8 years, 8 months ago:

One way could be to take them aside, tell them “Hey you know when you X, that makes me really uncomfortable, because that’s something that I want to talk about only with the people I choose to do so with, I really need you to stop bringing it up with people, can you do that for me?”.

You could send it to them as a message or a letter so they experience the discomfort of being called out in private and it could be less awkward.

I hope you don’t have to deal with the ‘I told them to stop but they still do it’, but if you do, you can ask about that too.