Luminescence

 I'm a human glow stick

I didn't know it was dark and then you cracked me open

Or no, I'm the fireflies under the trees in the evening, 

Wanting love so dearly I radiate light

I'm also the fireworks springing apart in the open sky

The very act of your eyes on me is an explosion

You are the stars 

And I will crack and yearn and explode underneath you.