Had a dream my gf ran away from me?

Well in my dream I was at a school and my gf was there. It started to rain outside and it was burning up rain. I got worried so I went back into the school to look for her, I fount her but she was running. I ask her to wait but she kept running, so I chased her an yelled her name as she turned the conner. Sh shock her head back and forth and went up some steps to the gym room and disapeard. As I was chasing her I couldnt catch up, for some reason I was running slow. What does this dream mean? I havnt met her in real life, we been going out for 4 to 5 mouths.