I am really sorry to hear about your loss. I have lost my Grandparents and Mom and Dad and each were so different for me. I can't possibly sit here and say that "I know what you are going through", because each releationship you have in your life will be unique to itself. Hold that uniqueness deep within your heart, with your memories of your Grandfather. He does sound like a special person as it shows in the type of person that you are. Thats why in these tough times you have so many people beside you and always remember you have family and friends here also.