Dreams 2

Hi I want to know what one of my dreams mean the boy I liked for a some times his mother came in my dream and she was trying to cheer my up I have never met her before but I saw her 6 years ago .
Also i keep having dreams about my dead grandad he died 3 years ago in one dream he was shouting at me and in the rest he was smiling and laughing I have had 10 dreams about him and we weren’t that close what does this mean ?