Love is Eternal
Have you read The Giving Tree by Shel Silverstein? It’s about a tree whose love for a boy, who grows up to become an old man, is eternal. At first, the tree is everything the boy wants—a place to climb, to hide, to eat fruit. But as the years go by, the tree becomes more and more neglected by the growing boy.
At the end of the story, the tree had sacrificed everything for the sake of the person they loved most, including its trunk, which was fashioned into a boat. This is what every mother and father feels for their child.