Crazy dream

I had a dream that I wasn't able to finish, but it still made me wonder what made me think this up while I was sleeping. It was my birthday party and my family had invited like everybody I ever knew to it. And they lived in this gigantic house with a parking garage with four or five levels and a club house that was so big I had to run across to get from side to side. Anyway, I get there by train and for some reason there is this girl Ellyn there in the same car. Back in the day I had tried to date her but somehow she just ended up not calling me back, and I didn't call her back ever. She was on the train with my sister because apparently my sister needed her help or something. So I was trying to be nice and talk to her and I was trying to be nice by asking where she worked. She was like "nowhere... nothing" and she looked away, so because I was such a smooth guy in the dream, we got off the train and I kept talking to her and she admited that she worked at a plant nursery, but I was expecting that she'd work in a law office or something. I was shocked but I thought it was cool and I told her that my mom loved plants and that they should talk. At that point Ellyn disappeared from my dream.

Then came in Brian Brecha (not my best friend Brian) And he starts talking to me and people swarm around him and somehow this makes me feel cool. I'm saying hi to everybody I used to know in high school. I roam the area and find different pockets of people, and everybody was there even people I didn't like. Phil, the jerk who hated me in middle school who ended up flunking out or something senior year was also there. It was crazy! I ignored him. I then remember seeing a guy "Andrew" who was somebody that my family knew but I didn't and there was an even bigger crowd around him. I didn't want to compete so I took my crowd outside. Then I wanted to find Kristin because I felt bad that I hadn't seen her. So we all went to the parking garage and looked around and then went back into the house to find her. And that's when I woke up. hmmm.

During the dream i remember seeing a lot of faces of people from high school, but I don't remember where I saw them in the dream so I didn't write about it. But I wonder why my brain chose to reunite just about everybody I could think of from my high school and a few people from college at my parents gigantic dream house. Why brain why?