This song is about how it feels like to be a shadow, always watching his back. The song is filled with the feeling of a one sided love and the yearning of the other person response to your feelings. That even a small act may fill her heart with so much happiness. Just being around him is sufficient and won’t ask for more to jeopardize the closeness. His happiness is her happines. He doesn’t have to give her more for her to be blissfully happy 🙂 but of course, there is a sense of sadness that things just doesn’t work out as how she would like it to.