Something about the way the man says his name makes his face heat. The flirtatious implications go over his head-- the teasing does not. The fact that he knows he's being made fun of but not exactly in what way only makes the heat simmering under his skin flare up all the more.

His lips purse in an annoyed moue. "I wasn't trying to approach you with any such air. I'm relaxing." Yes Zuko you definitely look very relaxed right now.