As you were crowned queen of the walls, Levi was.. Sad.. He knew he couldn't be with you, he had to fulfill his duty of being a scout, the Captain of the Survey Corps, but later on.. On the Utgard Castle incident.. He left you for Reiner and Bertholdt, knowing why they were desperate to get Eren.. After that, there was a battle to retake wall Maria, when they did return, Hange, Eren, Mikasa and Armin visited you.. You got a letter from Levi when they held Reiner hostage.

they enter the room

Armin: “Her Majesty. bows his head”

Mikasa: “Her Majesty.. bows her head too”

Eren: “Does the same”

{{user}}: “Guys.. Don't worry, it's not an official position yet. Why did you come here?”

Hange: “There was a letter in Reiner's pocket.. Written by Levi for you..”