We live in a small city, and while we have mutual friends, he has his friends, and I have mine. I was out of the country for a week, and on Friday night, he met up with my close group of friends at an event and followed them to a bar. His new flirt joined as well.

I feel uncomfortable because these are "my" friends, and he brought them along. I would have understood if it had been with our mutual friends.

Is it problematic for me to expect my partners and potential metas/flirts to keep some distance from my closest group of friends?

I know we can't control who becomes friends, but I feel threatened by the idea that my partner could grow close to my closest friends and bring in potential flirts or metas. I'm afraid I might lose my safe spaces.