Zuko: I can’t believe a year ago my purpose in life was hunting you down. And now- 
Aang: And now we’re friends.
Zuko: Yeah. We are friends. 
Aang: I can’t believe a year ago I was still frozen in a block of ice. The world’s so different now.
Zuko: And it’s gonna be even more different. We’ll rebuild it together.  

teared up for a second there