Am I being rude to my friend?

Hi teenager here, my friend I'll call her O and me started watching a series (arcane) about a week ago and after watching 4 episodes my other friend (P) asked to watch with us so we re watched the first few episodes and then continued.

A couple days into watching it and I had to go home for dinner when there was 20minutes left of the episode so I asked if they could wait for me to be back and said I'd be really quick and long story short they watched it without me I can back they were with 10mins left so I went and sat in the bathroom because I didn't want spoilers, then I realized watched the bit I missed I was quite upset but didn't think it was worth arguing.

Anyways on Friday O said she didn't want to watch arcane and she wanted to watch something else and then asked us to leave the room (a shared room that isn't in any of our houses) so we just decided to leave since it was nearly out dinner.

Yesterday me and P watched 2 episodes without her assuming that she didn't want to watch anymore, (we texted on a GC with all 3 of us in and said we were gonna watch it) and today she was (in my opinion) over upset about us watching it even though they both watched it without me and she kicked us out cuz she didn't want to watch arcane on Friday, we started re watching the episodes we watched without her and then part way through the episode O just got up and left without even Pausing it.

I don't know if we were being rude since they watched it without me anyway and she didn't make it clear she didn't want us watching without her. Am I being rude?