So, here's this:

Every third breath is made by a boa constrictor.
He lives in my ribcage, you see,
and sometimes like to see what his musculature can do compared to mine.

If every night star story started with a clear light,
what would happen to cloud cover?
What would happen to all the silver linings?

I felt what you meant when you said sometimes you yearn more for a body to hold,
someone whose arms say more than their breath,
than their breadth.
Boa knew it all along,
but I've just been letting him grow and gripe.

I knew it all along, that it would feel better then worse,
as he grew he'd need more space,
he'd demand more space and take up more space.
Except I always thought space was just a place for stars,
and if you needed to moonbounce,
you always had another planet available.
Except you didn't, and I didn't know if I wanted one, or a different you.
I want bits and pieces, I want to build my own puzzle with preference,
500 pieces that are hand picked by yours truly.

A puzzle is still a puzzle if all the pieces mostly fit, right?
Even in designated cutouts, with enough use they fade,
and become questionable in their habits.
"Are you sure this goes here? These reds are not the same"
"Sure hon, it's been like that for years, it's supposed to be like that".
When do you seek your better fitting other half, though?

Boa can twine, at least. Better to be fluid and versatile, than stock and habit.