[M] The time I cheated with my best [F]riend from college

This happened a couple years ago. I think the backstory adds to this, but those that want to skip it can scroll down to the “- – -“

I met Annie during a chemistry lab our freshman year of college and we kept up over our time at school. We flirted on and off over that first year, but eventually she started dating someone else. It hurt, but I put a relationship with her our out of mind and focused on being friends. Some of my best memories of college were with her, lounging and watching Netflix in my apartment or playing horror games. Inevitably, we would end up leaning against each other during a movie or jumping, screaming, and laughing onto each other. Nothing sexual, but there was always a certain tension I couldn’t help but hope would snap. But she would always leave once we were through for the night, and nothing came of it.