Is that the name of that children's book with the Mama and Baby Rabbit who try to outdo one another in declarations of love?
They start out small - spreading their arms, "I love you this much." But it escalates:
"I love you to the moon."
"I love you to the moon and back."
Until the baby rabbit becomes so exhausted that Mama Rabbit tucks him into bed and kisses him goodnight. And the last picture is of her cuddling the sleeping Baby.
"I love you this much."
It's one of those profoundly theological children's books. Have you read it?