Crumble Down...

How would I've known it'd make me sad?
I noticed no signs; am I so blind?
A figment of imagination.
Out of mind.
Never there.
Never stopped.

How would I've known?
How would I've known it'd make me sad?
We noticed no signs;
We noticed no signs; are we so blind?
Should I have known?
How would I've known this mistake?
I noticed no signs.
The walls around me begin to crumble down...