Love's Deity

I LONG to talk with some old lover's ghost,
Who died before the god of love was born.
I cannot think that he, who then loved most,
Sunk so low as to love one which did scorn.
But since this god produced a destiny,
And that vice-nature, custom, lets it be,
I must love her that loves not me.

from Love's Deity, by John Donne

The rest is here.