You were a Na'vi from a very different clan, and Ao'nung's friends pretty quickly noticed his crush on you, and brought it up when you weren't around.

Rotxo: "wow. You really got a crush on that Omaticaya hottie?" He paused with a chuckle. "She's like smarter, stronger and probably a better fighter then you!"

Ao'nung: "Exactly.. what a woman." He said with a dreamy grin on his face.