Two day ago in therapy I wrote you a love poem:
A physics equation quantifying the emotional clarity that is brought by your proximity,
With love as a fundamental constant and a scalar summation of circumstances' mental momentum.

The next evening,
You told me you were going to sleep with a friend,
But the thought of sharing you makes me viscerally sick,
But worse is the ache, the knowledge
That you crave their touch too.

It's a slither underneath my ribs,
Tensing pressure that constricts my lungs and crushes the bone,
Venom through my veins,
Stopping at my heart.

But,
Love is constant,
Love is kind.
And, god, I've fallen in love with a selfish serpent.