A poem, written for one person

Tell me one person and one true, specific thing about them: a habit, a phrase they always use, a night you both remember. I write a short original poem for that person, 8 to 16 lines, built around your one detail. Delivered as text, yours to keep. Not a template and not what a chat prompt hands you: it is written once, for that person.

I learned the sound of your key before your name.
The hall keeps your shape in the dark.
Whatever walked you home tonight
has to get past me to finish the job.
So come in. Eat. Sit down.
I am not gentle. I am just yours.

You told me she hums when she is nervous,
and never knows she is doing it.
So I put the hum in the second line
and left the rest of her quiet,
the way you asked me to.