What does this mean?

Okay girls i need advice, for most of last year I was dreaming about my old high school best friend. We used to be suuuuper close but unfortunately had a bit of a toxic friendship, so we ended high school not being friends. I keep having dreams about me apologising to her or is becoming friends again and in all honesty I do kind of miss her. So if anyone knows, why do I keep dreaming about her? Is it because I miss her a little? All advice would be lovely x (sorry if this is in the wrong group)