Did I get cheated on?

So I just want to say that this happened almost a year ago now, but it was something I was never able to fully confirm and want to know general thoughts for shits and giggles. Allow me to explain.

So last year, I (at the time) 21F was living with my gf 22F. We had been together for almost 2 years at this point. Prior to this incident, she began to grow distant and cold towards me. Like I’m talking she would get mad at me for asking to hang out with her.

A couple details to keep in mind, we’re both from different states and have no mutual friends, so this made it 10x harder to solve this little “mystery”. Additionally, I’ve only met a small handful of her friends, including the one in question (we’ll get to that later). I had none of their contacts, and none of them on social media, so I wasn’t able to contact anyone for clarification or details.

So here’s the incident that made me question, did I get cheated on:
It was a Monday, I believe. My gf had work on this day at 2:30. To get from our apartment to her job, it was approximately 20 minutes. This day, she mentioned how she had to get gas on the way to work, which she mentioned several times before leaving. Now, from our apartment to her job, we had not one, but two gas stations directly on the side of the road. So getting gas would take approximately 5-10 minutes. In summary, it would have taken her 30 minutes, to be safe, to get to work. She leaves at 1:45, so I assumed she would get to work by 2:15. Something to keep in mind, every time we had somewhere to be, we would always text eachother when we arrived to make sure that we got there safe. We both lived in a rural area that’s not very fond of queer people, so this was something that meant a lot to me for safety concerns. Well, 2:10 rolls around, and I wanted to see if she made it to the gas station. Surprise, she’s not at the gas station, nor work. Instead, she’s at this girls apartment. I knew this girl, this was one of her friends (I believe 30 or 31) from her job. Now, when I met this friend, she wasn’t very kind to me. Her tone would completely shift when I would talk to her, and she would basically ignore me when we were having group conversations. It’s also important to note that the majority of her friends, from what I knew, were way younger than her. Back to the location part, I refresh the screen multiple times to make sure I knew what I was seeing, but she was there for sure. I watched as her car drove out of her apartment complex and towards her job, and didn’t even stop at the gas station! 2:30 rolls around and she doesn’t text me that she’s at work. So, I text her and ask if she made it to work, and she responded a bit later saying she did, which isn’t like her at all. I confront her about this a couple days later, and she says “Oh I just got to work super early that day and read my book. Sometimes locations glitch at the wrong location.” Now, I broke up with her during this talk because a) this sounded fishy and b) she was being so mean to me that I just couldn’t handle the relationship anymore.

I did want to clarify that I asked her if she was picking up this friend for work, and she said no to that as well. She was at this apartment for a little while (at least 15 minutes from what I saw on my end). Another detail is that in a conversation they had, they joked about being a “top and bottom”, which is odd when you’re in a relationship in my opinion. Overall just a lot of questionable actions and red flags.

Now, what do you guys think, did I get cheated on?

EDIT: First off I’m getting a lot of support so thank you for those who are being kind 🫶 second, I wanted to clarify that she wanted us to have each others locations, not me