Aang always stood with perfect posture, the way the avatar had been trained. He could stay in any stance perfectly, the way the avatar had been trained. He could balance anything on his head, the way the avatar had been trained. He walked like the avatar should walk. He bowed how the avatar should bow. He danced like the avatar should dance. He spoke loudly like the avatar should speak. Yet something about her made his slump, made him loose his stance, made him drop whatever sat on his head. Something about her made him knock heads when he bowed, made him dance with two left feet. Something about the way she said she loved him, made him whisper.
More like a poem than an actual fic…
Fill in the blanks for 'her' on your own. Not my job.