"Silhouette"

Step by step, it matches me,
Little by little, shrinking then growing.
Every moment, always drifting,
Close but far and never slowing.
Clinging to the darkest corners,
Standing straight on every wall.
Lingering beyond the lighted silence,
Waiting patiently for it to fall.
Taller, shorter, thin or thick,
Company kept in rain or shine.
A stalking companion never gone--
A silhouette that will only ever be mine.