Tell me when you hear my heart stop.

I'm in Chicago listening to Lykke Li and expressing my thoughts through Wordle:
(There’s a possibility that all that I had was all I'm going to get.
There’s a possibility that all I'm going to get is gone with your step.

So tell me when you hear my heart stop.
You’re the only who knows.
Tell me when you hear the silence.
There’s a possibility I wouldn’t know.

Know that when you leave,
By blood and by mean you walk like a thief.
By blood and by mean I fall when you leave.

So tell me when my sigh is over.
You’re the reason why I’m close.
Tell me when you hear me falling.
There's a possibility it wouldn’t show.)

What does this mean? I'm not quite sure yet. But despite that familiar aching loss, I'm feeling safe in the knowledge that God is good.