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The original was posted on /r/amitheasshole by /u/DragonInBoots on 2023-12-30 23:17:37+00:00.
A little premise: me (29F) and my sister (26) still live with our parents in a two-storey house that used to be a duplex. On the upper floor there are the bedrooms and a bathroom, on the lower one there are the kitchen, the dining and living room, another bathroom and our parents' wardrobe.
Now, I don't like celebrating New Year, largely because I'm an autistic introvert and Christmas celebrations leave me drained. Every member of my family knows this, my friends know this, even my coworkers know this, so everyone knows better than to try and invite me for anything. So I just spend New Year quietly on my own and keeping an eye on my family's dog - he's scared of fireworks and needs someone to reassure him.
That is still the plan this year, but yesterday my sister started complaining about it to me: since our parents decided to go to our uncle's lakehouse for the celebrations, our own house is free, so she invited her boyfriend over. And she wants me to leave too.
As I said, our house has two floors, so I offered to simply mind my own business on one while she and her boyfriend take the other. I'm even willing to sleep on the couch in the living room for the sake of leaving them alone. But she still complains that I'm leaving her with no privacy and that she can't stay alone with her boyfriend at his house because he too still lives with his family.
I think I've been pretty reasonable and I think she hasn't given me one single good reason why she needs the whole house for herself and her boyfriend. Our parents too got dragged in this discussion and they're both on my side, but I do find myself wondering if my sister doesn't have some reasons: after all, I would still be in the house and I guess she may feel guilty about basically ignoring me for the evening? Or her boyfriend - a really sweet guy - could possibly try to involve me in the celebrations and she fears that would ruin their evening.
Anyway, the point is: will I be the asshole if I don't vacate our house for my sister and her boyfriend on New Year?