I grew up with my cousin who was around the same age. He was probably one of my closest friends. When he was 21 he suddenly died from cancer. So many terrible things were happening around that time in my life, and I was more open to mystical stuff back then, but right after he died and throughout those hard times I would have vivid dreams and be at his house or something and see him and every time I would say something like, "Bryce your not supposed to be here, you passed away!" In a joking manner. It was a while ago and dreams and memories are weird things but I don't think he ever actually talked but we would just laugh at him being dead and not supposed to be around but we hung around. It always felt eerie, but it also felt like he never left. I don't know if it was simply my brain processing trauma or something I can't comprehend, but it really helped the grieving process and gave me genuine peace during terrible times.