Thanks for Priestessofnox`s headcanon: “ Zuko is a natural cuddler. First time it happened was before the end of
the war when the gaang were still camping together and Zuko just
happened to latch onto Aang and in the morning, Aang isn’t sure if he
should move and wake Zuko but Sokka wakes up and laughs saying, “Zuko
finally caught the Avatar”.“