[What better time to spill the beans than in the semi-nude.]

I don't really know what happened. It's possible that she's from after Ba Sing Se.

[Zuko lowered his gaze to the ground between them, his voice quiet:]

I betrayed both her and my uncle. Technically we were still enemies in the underground catacombs and we did fight. But Katara... right before the Avatar and Uncle burst in to break us out, she was determined and hopeful to the idea that she could heal my scar. Yet I betrayed her-- why am I even talking about this in the first place..?

[The inner conflict was beginning to show.]