I (18f) celebrate my birthday soon. I wanted it to be a small gathering with only my closest friends, literally only around 2 or 3 people. I invite my best friend since elementary school (also 18f) and she goes on about how excited she is, and that her and her boyfriend would love to come. Every time she talks about coming, she says her and (boyfriend’s name). I’m immediately not comfortable with this. I’m not a confrontational person at all so this absolutely sucked. I asked her if she just assumed he could come, and she said yes. I shut it down as nice as I possibly could. I told her that while he’s a good person (from what she tells me, at least), i wouldn’t be comfortable with him coming as I have literally never met him before. Anything I know about him is only what she tells me. Plus, I haven’t seen my friends in a while (been swamped from uni assignments lol) so I wanted it to be a lore drop/catching up kind of dinner. I wouldn’t be comfortable if a complete stranger to me was there and I was telling all my business, if that makes sense. To make things short, she blew up at me, saying I’m not a good friend, and if I’m inviting her, I should be open to extend that invitation to her boyfriend because they’re together. I tried to talk things out and explain how I felt to her, but she’s been ignoring me for over a day now. I’m not really sure what to do. She’s literally been my best friend my whole life, and this behaviour isn’t like her at all. So am I the asshole? Should I have said anything differently? I’m overthinking so bad right now because she’s never acted like this before. I can only assume it’s because of something I said.