I'm safe up high

The missing starts already. And my head races to catch up with what my heart has known for so long. It's a dead weight. Flopping and messy, unable to predict where its head will roll. I can carry it no longer. I've forged a life inside its cage. And I can't breathe anymore.

In poem:

The missing starts already.

my head races

to catch up with what

 my heart has known

 so long.

 It's a dead weight.

Flopping and messy,

 unable to predict where its head will roll.

 I can carry it

no longer.

 I've forged a life inside its cage.

I no longer breathe alone.