My grandmother passed away

My grandmother passed away . She was 68 years old and had multiple health problems. A few days after her funeral, I was at her home with my grandfather. We were looking at a wall of pictures they have in then He picked up a picture of him and his wife on their wedding day. They were both young, slim, beautiful, happy people. He looked at that picture and then he looked at me and said, "This is how I saw her every day of my life." At that moment, I understood what love is