What does this extremely bizzare dream mean if anything?

so i had this really really wierd dream last night. it started with me walking to my highschool, its like a 15 mile walk, so i dont know why. when i got there i walked into this massive party that everyone from school i knew was there. all my friends were in the back talking amongst themselves im not sure why. then one came up and yelled for better music, so eddie van halen stepped up on the stage and started soloing. i jumped up with him and started screaming and dancing until this really druggy kid from my school i used to talk to came up and told me to go to the gym. so i did and there was a volleyball match going on and my ex girlfriend who just broke up with me last week was there apparently on the team. she looked up at me laughed and turned around. i walked out of the gym to avoid having to talk with her and walked into this really small room about 20 kids were sitting in, most of them friends. then my ex texted me and said she was breaking up with me, even though we were already broken up.i walked outside to a cool, fall, night. i looked up at the sky then at my school and looked around for a minute at my school, which was pretty realistic and i remembered a lot of detail. but i walked over to a dark patch where my friends gf was just sitting smiling. when she saw me she ran away, i chased after her and asked where she was going, she didnt say anything so i stopped and then her bf appeared and chased after her as i watched. then i walked away down the road and somehow showed up at my exes house. my first girlfriend and like 5 other people i didnt know were also there and they were getting ready to go to a party or something. when my ex noticed me she smiled, asked what i was doing and then asked me to leave. i told her i didnt mean to creep on her i had an important reason for being there. she asked what and i dont think i responded, then she left me alone. then my first girlfriend saw me, yelled my name came up and gave me a hug and then walked away like nothing ever happened. my dream ended with everyone leaving except my exes younger brother who was being babysat by some gothic kid ive never seen. i started to leave and then my ex came in stared at me for a long moment, and i looked into her eyes, and then shut the door walking away.