WHY AM I DREAMING OF MY OLD BEST FRIEND?!!! HELPPP

I fell asleep right, and Idk how I remember my dream, but I do. Tell me why I was crying over a friend I lost. Ilke I need to get over it shes as shitty ass person :d I need help mentally! Over view of my friend shes just a shitty person overall wont shutup attachment issues! You know the type with no friends but for a good reason thank the lords I dropped her.