He is referring to himself as the "moon" in our lives. The little star that lights up our heart. Makes us feel some kind of way. Although, there's some distance, between him the (Moon) and us the (Earth), we can see each other. And he will always watch over us just like the moon. Everyone, compliments him all the time, but he is empty from the inside, hurt some way. He is saying that we are the real BEAUTY. Suddenly he started to wonder, whether we watch over him, just the way he does. He doesn't want us to find out his hurt side. It worries him. He is determined to sacrifice himself for us, just the way we do. Promises to always orbit around us, lighting us up, just like the moon. He didn't know/ love himself before meeting us, but with our love he found himself. We became each others reason to smile. He will be with us during the crescent moon & the full moon. Let's promise to stay with each other, and keep each other happy during the trials. He is thankful and grateful for us.Our existence is beautiful to him. Let's love ourselves.