Dream About A Girlfriend And Confusion

I was with my friend and she jokingly said something along the lines of ‘will you be my boyfriend?’ And I, being serious, said yes. We got together then, but thing is she already had a boyfriend. There was no drama between me and him; in fact, he was standing near us when I confessed and she said yes. We were just confused on whether that meant we also had to date if we both had the same girlfriend, and that was something we both didn’t want. As for where we were, it pretty much looked like an empty garage. We sat in a semi circle, crisscrossed applesauce on the floor with some other students and a teacher talking about something in front of us. At the (supposed) end of the dream, me and my new girlfriend were walking down a hallway that I easily recognized as my irl school’s hallway. She was giggling and talking about how I caught her off guard with my answer to her question at the beginning of the dream. Once we reached my class, she kissed me on the forehead before leaving. Her other boyfriend was also in the same class, and since we were lined up outside of the classroom, it just felt sorta awkward. Some other parts that I can’t tell the context of nor in what order they came in: I was in an extremely small and heavily decorated room. It was clearly a child’s room and was quite comfy despite how cramped it seemed. The floor was carpet and the blanket on the bed right in front of me was very stuffed. This scene had mostly muted colors with a warm yellow coming from the sun just outside the window. I was reading some sort of note addressed to me; it came from either my classmates, my new girlfriend, or her other boyfriend. I have no memory of what it said, but it wasn’t anything unusual. I was at some sort of house (I either just left or never came inside) on the porch, and I started going down the steps. It was in the afternoon, so it was pretty dark. I remember going down to the side of their house, just beside the porch, and looking under their house (since it was slightly raised the house wasn’t really touching the ground), but I have no idea why. I can’t remember anything after that. That’s all ^^