Under the darkness of the new moon and the brightness of the white stars and the warmth of Aang’s body, Zuko lay – Aang pulled onto his chest, Zuko curled into Appa’s side. They were pretending to sleep, but Zuko could sense the irregularity of Aang’s breath and the strength of his beating heart.
“We’re not very far from the Fire Nation, are we?” Zuko murmured as gently as possible.
“No,” Aang replied, slow, nearly-asleep. “We’re not.”
Ten years after the Hundred Year War, Zuko asks Aang to travel the world with him.
Zuko hadn’t seen Aang in three years. In high school, starting when Aang was 12, Zuko had tutored him. He had enjoyed it, but it ended once Zuko graduated. He’d never forgotten Aang, but they’d didn't maintain contact and they weren’t friends.
So, being invited to Aang’s high school graduation was a surprise. So was being adopted into his friend group and starting to find him beautiful.