[Aang hesitates for a moment, wondering how much he is supposed to tell Zuko.]

In my time, the day before I woke up here... we got into a fight. I don't know how much I'm supposed to tell you, because all of these time differences are giving me headaches. But I do know that if you are the Zuko from the past, I can't judge you for something you'll do in the present. ...I mean future. Your future, my present. Well, my past... see? I can't keep any of this straight!

Anyway... you haven't seen the end of the war yet? What's your last memory, Zuko?