White horses and black, a poem

I belong to a facebook group where those of us who are founder members post pictures or sentences to help other writers and each other to take inspiration, and just write what is inspired by the imagery for 15 minutes - which can always be expanded later.  This grew from a throwaway line in a discussion of the seaside over Heather, the true founder, riding her horse on the beach.  I had a vision of a black horse on the shore, and the so-called white horses of the breakers, which became an anapestic balladic poem. It is not a happy ever after, so be warned!  

 White Horses and Black

White horses crashing and rolling, white horses that rise on the sea

A single black horse gallops onwards,  it carries my sweetheart to me

Galloping on through the shallows, galloping over the sand

White horses fret at the edge of the shore where the water is met by the land

The waves shatter hard on the shoreline, the waves being horses no more

But my lover will ride on regardless, riding onwards across the dark shore

He will gallop across the dark causeway, racing the tide as it floods

And when he has reached my lone island his kisses will sing in my blood.

He will gallop across the dark causeway, revealed by the ebb of the tide

And will gather me into his arms once again, and will ne’er more be reft from my side

Together upon my lone island we will hear all the sounds of the sea

And the white horses race o’er the causeway which carries my lover to me

Oh my lover! Please hurry, please hurry, the waves are encroaching too fast

And the white horses play on the causeway, and the safe time for riding is past

I look out from my lonely island, and in the dark waves I can see

Amidst the white horses one black horse’s head, swept away by the herd from the sea.

In the morning the shoreline is quiet, an exhausted black horse on the sand,

And the white horses born of the ocean just shake their soft manes at the land

But the man who was recklessly riding is gone now forever below

For defying the horses of Neptune far under the waters that flow