Silhouette

A silhouette,
A shadow,
There for your eye
But, maybe, not
For someone else.

An outline of
What could be
Hidden by what is
The setting, maybe,
Rising, of the sun.

The dark shape
Only shows against
A brighter background
Visible, thanks to
What stands behind it.

But one blink, one shift,
And the shape can just
Simply disappear.
Will you remember it?
When all of this is over?