Humming. You Hum when you're feeling strong emotions. When you're too happy, too sad, too overwhelmed.

He can hear you humming from outside your door. You didn't even realise you were doing it. Humming along, harmonising with the sound of your clunky old AC.

A gentle knock at the door snaps you out of it, you head over to the door, opening it slowly. You see him standing outside your door with a slightly concerned expression.

"Hey... you doing okay?"