Why do i keep having dreams about him?

When i was in high school their was this guy in my gym class named Danny and he also had a twin brother who was in my class i never really talked to danny he was popular and i wasnt. I only talked to him once he was sitting out in gym class because he broke his foot and the day before school i got in a car wreak and my neck was hurt so the teacher told me to sit out. Danny asked me what happend and if i was alright. His twin brother was always mean to me when i was 18 i moved to a new state a couple of years after i moved their one of my high school friends called me and told me that Danny commited sucide i was extremely upset about it. A couple of months ago i started having dreams of Danny and i would have one every couple of months this month so far i have had two. They arnt abnormal dreams just us talking and hanging out mostly.