The night my grandpa died, I had this dream?

So my grandpa died like 4 years ago and the night that he died, I had this dream. I dreamt that me and him were sitting in his bedroom and we were just talking only when I woke up, I couldn't remember what either of us had said. Just want to clarify, this was after he died. This has always kind of bothered me though because it's so much unlike any other dream I've ever had. I've never ever had a dream that normal. My dreams are always screwed up. Hell, two nights ago I dreamt I was Lord Voldemort and once I had a dream that everyone in Star Wars was made of rice and Obi-Wan kept saying "May the rice be with you". So what do you think this dream means because I really feel that it means something.