Hey all heres the story

Im 30 years old and finished High school 12 years ago now for the past 12 years around once every 1-2 months i am constantly dreaming of this guy i went to school with (im male too).This guy was not a friend or enemy he was just someone i would see and we would exchange hellos.What could this mean?We were nothing to each other and i havent seen or heard from him since ive finished High school