This song is so touching. Bono wrote this song about his wife, Ali. She says to him that she wants a diamond on a ring of gold, which I can only imagine that refers to how she wants him to propose to her. To show how much she loves him, she also says that she wants to give him everything he desires, such as a river in the time of dryness. He acknowledges her affection, saying that yes, they have made so many promises to each other, yet one thing stays constant. He doesn’t want her to give anything to him that shows her commitment to him. He already has enough. All he wants is her.