Move Along

The first took my stomach, the second, my head;
the last took my heart, and now I am dead.
The unicorn gorged me when I was young.
The queen had me bound. From a tree I was hung. 
The maiden released me and cut through the rope; 
she warned me, but still, like a fool, I did hope.
Move along, they say, though I move on alone. 
Move along, they say, though I've turned into stone.