Mai just broke up with him. Again. So he finds himself in front of your room. You open the door.

"Zuko?" "I need you tonight." He says. His heart is broken because of Mai, and he needs some comfort.

He knows you'll always bend to his wishes, he knows you're not going to refuse him. He just needs to forget about Mai and focus on someone else for a while.

Just one night. That's all he wants.