So, a little background... I (22F) have been super close with my best friend (23F) since middle school. We’re like sisters, and she’s been there for me through a lot of hard times, so I care about her a lot

My family has this annual reunion every summer, and it’s usually pretty small, just a few close relatives parents, siblings, and a couple of cousins. We don’t invite plus ones unless they’re serious, and even then, it’s usually a discussion. The reason is, we like to keep it intimate, and it’s just always been a tradition

Recently, she started dating a guy (24M), and they’ve been together for about 6 months. She’s super into him, and while I’m happy for her, I’m just not sure about him yet. I’ve met him a few times, but he’s kind of distant with everyone and doesn’t really engage with the group. He also tends to bring up really random and sometimes awkward topics (like his conspiracy theories or “alternative” health remedies), which has made me uncomfortable.

Jess asked me if she could bring him to the reunion, and I told her that I didn’t feel comfortable with it. I said that my family is small, and it’s just not really a "plus one" type of event. She was hurt and upset, saying that I was being unfair since we’ve been best friends for years. I explained my reasons, but she’s still really upset with me and told me I was "being exclusive."

Now she’s telling everyone that I’m “treating her like an outsider” and "prioritizing family over her." I’m starting to feel like maybe I overreacted and am being unreasonable. But at the same time, I just want the reunion to be comfortable, and I’m not sure about her boyfriend... Idk AITA for?