Dear Queenie,
My sister married a man I used to date in high school when we were both kids. Now, whenever we all get together, he likes to talk about the good old days when we were in high school, including mentioning the fact that we used to go out together.
It was no big thing then and there is nothing between us now, but he keeps talking about it and it makes me uncomfortable, as if he thinks there might be, which there wouldn’t.
Queenie, how do I get him to stop?—Not interested
Dear Not interested,
When he starts talking about the past, interrupt him and tell him he is just being boring. Then, take him aside and tell him what you have told me: that he is making you uncomfortable and if he has any ideas of that sort he can just forget them. Repeat emphatically, as necessary.