Hi. This might be a long one.

The next year of June I will be graduating highschool. This is typically viewed as a relatively big event where I am (Scandinavia), where students rush out of the school building, meet up with their families to say congrats, then scurry along to ride around the city and party with their peers.

The issue for me is the family part. My family consists of two main sides: my mother, brother, his girlfriend (1), and then my father, sister, and her husband (2). They have no contact with each other whatsoever and a lot of family feud has occurred to cause that consequence. They don't actively hate each other, but dislike and pettiness is consistent.

I feel forced to choose between two sides. This has caused me a relative amount of stress lately. My sister and I talked about this, and she said she would understand if I didn't choose side 2, but she is a family-oriented person so I feel I would still disappoint her. My dad doesn't care about social events and festivities like this (nor do I, so I'm not upset with him or anything like that). My mom, however, thinks this is one of the most important milestones in life. She even told me she would show up along with my brother (with whom I have no contact; I blocked him a while back because he's obnoxious and has started to buy into right-wing and Trumpist circles, and I don't really want to be with people like that. He has expressed very strange views at my father's house, but that's another story).

Personally, I would rather none of them show up. My mother disagrees with me on this, but I feel it would be much more awkward with 2 families on the opposite ends to choose between, than having nobody there. Like, who do I go to first? And since they can't stand to even see each other, how far away would they stand from each other? 500 metres? That just sounds awkward to me.

I am considering only inviting my friend to this celebration, a guy I met in my programming class last year. I would feel infinitely better having only him there than both of my family sides. My mother is a stubborn woman and I'm guessing she expects she will be there along with my brother, and my sister is very sensitive and can hold grudges for a long time, and I feel like I have to choose between a bunch of adults that want to show up to this minor festivity at best. Everyone else my age can enjoy this event, and I'm stuck here trying to plan an acceptable alternative.

That's that. I'm glad I got to express my thoughts. Any advice or support or personal experiences are welcome. Cheers y'all!