Sokka had been looking for Katara all day.
"Damn it, where could she be?" He asked himself. He saw an igloo outside the icy city. He walked towards it and saw Aang get out of it.
"Hey, Aang have you seen Katara?" Sokka asked.
"Yeah she's been with me," he replied as a slender form crawled out of the igloo.
"Hey big bro, what's wrong?" she asked.
"Dad wants you back home, he's throwing a party for your birthday and it's not much of a party without you," Sokka said
"All right, tell him I'll be right there," Katara said putting on her coat. Katara turned to Aang.
"Wanna be my date?" she asked sarcastically. Aang chuckled, "Sure," he replied.
The guests were all seated at tables Master Pakku whipped up from the icy floor. Suddenly the massive doors creaked open. Everyone looked and saw Katara dressed in a beautiful Water Tribe dress. Then someone walked up behind her and scooped her up in his arms. The light obscured him for only a moment. He stepped into the room.
"Anyone call for a delivery? I've got a birthday girl here and nowhere to put her," Aang joked. Katara started giggling at the fingers gently tickling her sides. Aang placed her down and the music started. After about ten minutes he noticed that no one was dancing. He stood and walked over to Katara and held out a hand. Katara looked up and saw the smile smacked on his face. She returned the smile and took his hand. Aang looked to the conductor of the band and winked. The conductor nodded; he looked at his conductor's baton and shrugged. He tossed it aside and clapped his hands together. This got the attention of the entire band. He frowned at them and they instantly knew to turn to a certain page in their sheet music books. The music started and Aang started up the dance with Katara following almost perfectly in sync.
Aang then leaned over a table and grabbed a flower in his teeth halfway through the song. He wrapped his arm around her waist and they started to waltz. Aang tossed away the flower and began to spin Katara around him. His airbending made Katara's pirouette turn into a small tornado. He tossed her into the air and just waited around casually. He looked around then followed the crowd's gaze up to Katara. He feigned surprise and stretched his arms out to catch her. She fell gently into his arms. He leaned her back and placed one hand gently on the back of her head. She smiled just before being pulled into a romantic kiss. Everyone reacted with awe. When the band stopped playing the couple got up and bowed.
Aang saw the conductor's baton across the room and airbended it back into the conductor's hand. Aang nodded and the conductor responded by starting a slow song. Aang looked to Katara.
"How about one last dance?" he asked. Katara smiled and nodded. Katara placed one hand on Aang's hip and the other on his shoulder. They started to dance. Aang shifted behind Katara and pulled something out of his robes.
"Katara, I've been wanting to ask you this all day today. And I thought that now would be the perfect time to ask…" Aang paused as he placed a betrothal necklace in front of her, "…will you…marry me?" he asked. Katara looked at the necklace in shock. Tears of happiness welled up in her eyes. Toph was sitting across the room with Zuko. She couldn't feel vibrations as well in ice but she still felt Katara's heartbeat jump up drastically. She didn't know what had caused it but she smiled because she knew that Aang was the one to cause it. Katara spun around and kissed Aang deeply.
"Yes! Yes I will!" she shouted through her tears. Hakoda walked up to the couple, "Is everything all right?" he asked. Aang took the betrothal necklace and let it dangle from his fingers. Hakoda smiled and patted Katara on the shoulder.
A few weeks later they were wed and Aang walked away from the Alter with Katara in his arms. Katara wrapped her arms around Aang's neck and pulled him into a kiss. Aang broke the kiss and whistled. Appa, who was sitting only a couple hundred feet away waddled up to them. He lowered his tail and Aang carted Katara onto Appa's back. With one beat of that massive tail Appa was airborne. Aang wrapped his arm around Katara's shoulders. The last thing the people of the Southern Water Tribe saw were the words "Just Married" painted onto the upper part of Appa's tail. The new couple flew into the sunset and headed to the Southern Air Temple.