I walked back to my bedroom, and the door was firmly shut… which of course it was.
There was nothing stopping me from just barging in there, no holds barred, it was my room after all… but as soon as I got to the door, I knocked instead, not too loud, not too quiet, not too hard either… but also not too gentle.
So long we two spent pulling and tugging on each other's hair we started recognizing things we don't even think twice about. The sound we make walking down the stairs, the specific time precisely we go to sleep, and even the way we knock on each other's doors.
That one, in particular, was hard to ever get wrong.
A faint clicking, and the door slowly veered open slightly, in that narrow crevice - a small glint of bright blue, and a heavy sigh funneling through. "Yeah, I knew you'd come knocking for me eventually."