Exploring My Mind

Last night's dream was a sad one for me. Took me a few moments after waking up to realize it didn't actually happen.
I was hanging out in my old middle school for whatever reason. All of a sudden, I noticed my girlfriend outside of the door in the hallway, being insulted by some guy. Obviously angry, I stormed out there and beat the guy up, telling him to never disrespect her ever again. Afterwards, my girlfriend and I wandered off. As we passed by more people in the school, she decided to run ahead of me and hang out with them instead. So, naturally, I started feeling as if she was mad at me.
I eventually asked her about this. "Are you mad at me about beating up that kid? I'm sorry."
She shook her head and said it wasn't that. I asked what it was. At this point, I can't remember what we discussed, but I do remember it ending with us standing by a poolside, me begging her to forgive me about something, and her splashing me with water and running away.
Woke up afterwards with a sad feeling, only to realize it was just a dream.