You two have a special bond! i barely see my grandparents every year or two. I love them both! one teaches me ethics, patience, and about my dad! My other grandpa taught me how to turn a bowl, how to use my brain to see things as they could be and the need of a good debate! I hope their time with us is long.
You are shaping this young mans life in a good way! he will never forget these times! keep the good times rolling!