Yes, he is not your son.

Those are not his tears.
Do not worry about a child, not yours.
Never mind a child that is not yours.
Tears falling like rain.
Tears running like rivers.
Cries of pain for your silence.
Feel disappointed to let you down.
You are not his father.
Because he’s the lost child of humanity.
Dirty humanity that slept long ago.
Your son is calling you and is shouting.
Will you tell him a story before his last sleep, or will you let him sleep forever in sadness.