I (20F) am having a birthday dinner on Friday with my family. This is a small tradition we have where the birthday person chooses where we eat. I was told on Wednesday that my sister (15F) would be bringing her boyfriend. I’ll admit that I do not like my sister’s boyfriend and everyone in my family knows this fact. However, this has nothing to do with my decision. I’ve expressed to both my mom and my sister that I want this to just be a family dinner. My mom said that my sister’s boyfriend is family. To which I replied that I don’t view him as family. Also, my family hasn’t been around for birthdays 16-18 due to my sister’s softball tournaments and all I want is one dinner with some of the people I care about. My sister has said that she would come, but that she will be mad if her boyfriend isn’t allowed to attend. I’m the only person in my family that doesn’t like them and I’m honestly starting to feel like I’m crazy for that and should just let him come.