There's one thing I still don't really get.. At the end of The Earth King, Aang tries to tell Katara that he loves her, but he gets interrupted. Then when Aang is about to mount Appa, she kisses him on the cheek, nothing strange. But when Aang and Sokka are flying away, Aang says "Yeah, girls are waiting for us.", that's nothing special but the wayhe says it is.. idk if that was sarcastically.