AITA for breaking up with my girlfriend because of a “caught cheating” prank?

I (26M) broke up with my girlfriend (25F) of 2 years because of something that happened recently, and now my friends are saying I massively overreacted.

So, a few days ago, my girlfriend and a close mutual friend decided to play a prank on me. The prank was that they filmed a scenario where I “caught” them in bed together, pretending they were hooking up. They set up a hidden camera in the bedroom, and when I walked in, I saw him in just boxers and my girlfriend in a bra and panties, straddling him, acting like they were mid-hookup. To make it more realistic, they even made some noises and tried to act like it was happening for real.

I was shocked, furious, and immediately confronted them as I thought it was real at first (like an actual betrayal) and then I walked out of the room and started leaving the house, when they followed me screaming it was just a prank and then showed me the video they’d been recording.

To be honest, I felt completely betrayed not just by the idea of the prank, but also because of how they had gotten undressed to film it. I know it’s meant to be funny to some people, but for me, it felt disrespectful, and I was hurt. The whole thing felt like a violation of trust, even though I know they weren’t actually cheating.

I told her I couldn’t be in a relationship with someone who would do something like that, and I ended things right there. She’s devastated, and our friends have been telling me I overreacted. They think it was just a harmless prank and I should’ve taken it better. But I can’t shake the feeling that it crossed a line for me, especially with how intimate and uncomfortable it felt to see them in that situation, even if it wasn’t real.

Now I’m left wondering if I made the right decision. I’m starting to doubt myself because everyone else seems to think I blew it out of proportion.

Edit: I did not expect this many responses. Thank you guys. She posted here earlier and sent me a link to her post. I know she wants me to watch the video to prove it was all set up and planned, but I feel she still doesn’t get that I am upset about her disregard and disrespect for me and our relationship. Anyways, I am going to sign off for the night.