Again, the prince offered her a small smile and shook his head of black hair. "You've done enough already. Just...hold onto that for me. Not that I intend to you use it again, but as a reminder to things...things in the past."
He didn't know what to say in response to her declaration of trust. No one outside his uncle (well, and now Cordelia) had ever trusted him. It was something that was still a new concept to him, for he was used to being doubted and having to watch his back, always prepared for betrayal. With Katara and the others, it didn't seem like that. And yes, understood that she was talking about his sister, his ex, and Ty Lee. He nodded to show that he understood that much.
Zuko stood quiet for a moment before uttering, "I should probably go. Angel wanted me to patrol with him for a bit before sunrise if I had the time. ...don't tell anyone about me being the Blue Spirit. The Avatar knows, he found out a long time ago."