It's about someone who's left your life, but you didn't want them to go. It's simple, but it's heartbreaking, and also hopeful, since though they left, the person left a light in him that will always glow. That light could be reassuring words that person told him or just the memory of them in general. Remembering them will help him in times of pain and darkness, which he's thankful for, but the sense of longing reappears at the end with, "So if you love someone, you should let them know," implying that it's better to cherish someone while they're with you now than to only have their memory to hold. To me, this is a more lighthearted parallel of 'O' from Ghost Stories. Very tugging on the heart.
It's about someone who's left your life, but you didn't want them to go. It's simple, but it's heartbreaking, and also hopeful, since though they left, the person left a light in him that will always glow. That light could be reassuring words that person told him or just the memory of them in general. Remembering them will help him in times of pain and darkness, which he's thankful for, but the sense of longing reappears at the end with, "So if you love someone, you should let them know," implying that it's better to cherish someone while they're with you now than to only have their memory to hold. To me, this is a more lighthearted parallel of 'O' from Ghost Stories. Very tugging on the heart.