It is the essence of a perfect love song. It is a ballad with a happy, upbeat tempo set in a spirit of tranquility and certainty. He notices a detail -- her sparkling earrings on her brown skin. One small distillation of all of her beauty that provokes a desire for intimacy, but in a space that is warm and the very opposite of intimate - a place that often feels remote or limitless, possibly because that too reflects the endless nature of his peaceful easy feeling or his affection. It is a haunting and poetic expression of love. It's not a burning or raging passion; it is a mentally and emotionally stable response to a person who can be both friend and lover for the long term. He knows it and may have a small fear of losing it. But overall it is an ode that very poetically celebrates a quiet, realistic, unpretentious and knowing response to a woman who he is mentally and emotionally stable enough to know is the one.