Denial
With every day the heat grew worse and like the constant, climbing sun their bickering grew more intolerable. Toph, the least patient and certainly not the subtlest of the group, decided to address the problem directly.
"Will you two shut up! You two fight like an old married couple. Listen, if you want to get hitched, fine, at least then you could fight about where you would raise the baby!" Toph turned on her heel and marched away, satisfied her work was through.
Katara and Zuko stood awkwardly for a moment, staring at one another, and then,
"She thinks we like each other 'cause you always follow me around!"
"Well I wouldn't follow you around if you would just give up your vendetta and accept me!"
"I don't have a vendetta, I just don't like you!"
"Why not? I'm a very likable person!"
"Says who, you're girlfriend?"
"Yes, actually, she does. Are you jealous?"
"That's absurd, why would I be jealous of the girl who you're with? You're the jealous one."
"Jealous of Aang? Thanks, but I like having hair, besides why would I ever want to be in love with you?"
"I don't know, you tell me."
Off, removed from the noise, Sokka and Toph grinned at each other.
"You're a genius,"
"I know,"
"Seriously, any minute Zuko will be proclaiming his undying love for Katara, and then I will have ample reason for throwing him off a cliff."
Toph cocked her head to the side and sniggered. "May take them a while to get there though,"
"Eh, some people are so in denial," Sokka laughed, staring at his feet.
"Tell me about it," Toph muttered, looking pointedly away.