Korra,
I really hope this reaches you before you leave, I have something to say that I've been meaning to say for a while. I heard you say it when we said goodbye the last time I left, but you had said it so quietly I didn't know if you actually wanted me to hear, so I didn't say anything back. I've been kicking myself ever since, the thought of you leaving before I get to tell you that I love you, too, is eating me alive. I'm so sorry I waited until now. I love you, too.
Here's a key to my place. Whenever you come back, feel free to let yourself in. Every night I'll look at the moon and think of you, and every morning when I leave for work I'll hope that I come home to find you sound asleep in my bed, safe and secure.
Safe travels, Avatar. I love you.
Love,
Asami
