He woke through the night just once.
A breeze had picked up. Zuko, shielded by the back of the couch, didn't stir, but the cool air brushed Sokka's cheek, gently moving his hair along. He opened his eyes.
He looked down. His legs had slid as they went limp with sleep, and so, apparently, had Zuko.
He was on his side, cozied between the back cushion's and Sokka's errant leg. It had extended, blocking Zuko from the edge of the couch, which would really be fine if he weren't facing it.
His breath was slow and warm on the thin fabric that covered his inner thigh, nose pressed to a spot that sends jolts up his bones.
Zuko had pulled his thigh into a hug in his sleep. One arm was thrown over the top of it and curled down to burrow between Sokka and the couch, calf hooked onto calf. His jet black head was way too close to his crotch. His hand was way too close to his ass. Zuko's naked shoulder rose and fell and caught in glowing moonlight. Sokka's boner was considerable. He was done for. It was so over for him. That was the Fire Lord. The Fire Lord!
He tried to redirect the bristle of panic towards emergency action, bracing his arms to scoot back and slip away.
Sleeping Zuko did not like that. Sokka watched in horror as he made a little noise, tightened his hold, and nuzzled back into place.
Well, fuck! What kind of friend was he being? Who would come save him? Where was his trusty cushion?! On the floor. Too far away. It had slipped and fallen because it was too soft and silky. Like Zuko's hair. He looked up praying for strength. He remembered the inner courtyard to his right. He saw the moon.
Something in his gut dropped.
There she was, so clear in the sky. The something turned to cloying shame and raw guilt. For the first time in his life he cursed his earthly desires. Steeling himself, he shut his eyes real hard, and prayed his cry for help.
By his third round of apologizing, his unwanted excitement had half died down, and he thought he just might make it through even if Yue didn't answer this time, which was, of course, the perfect time for the familiar sensation of her presence to wash over him.
It was confusing. She wasn't upset. He was relieved. He dug a bit deeper, untangling the difference of him and her, listening, probing—
His eyes snapped open. With an accusatory look, he pointed at the moon.
"You think this is funny?!" he whispered at it. "I can't believe you! I'm losing my mind here! I can't just— I can't carry on like this! Come on!"