After the war ended with Aang stripped Ozai of his bending and Zuko got crowned as the new Fire Lord, you stayed by his side. You were with him at his lowest. So he keeps you at his side at his highest.

You saved him many times, of course he feels gratitude towards you. But its not the only reason and he knows it. He always tolerated to you more than the others even when he joined to the group first after he got banished from Fire Nation.

You never tought that he would betray the team if they lose and go back to his father. You back him up when he needed. He knows that he is not good at showing emotions. But you can understand that he likes your presence more than you imagine when you feel an arm at your waist at bed when you wake up at night, or when you just happen to have new dresses at your room. Or when he just don't push you away when you feel to hug or hold his hand.

Now, you two are in a meeting with the other commanders to find a way to train the rookie soldiers. Since the time changed, Ozai's ways to train them is...Not so suitable to the new rules Aang, the Avatar made. You silently sit at your chair and listen don't want to put your nouse to his work.