“So what I want to know is why it is that I can no longer find you, in my mind. You are still there, just, but you are there like a ghost, a will o’ the wisp. Not long ago you burned–your heart burned–in my mind like silver fire. But after that night in the inn it became patchy and dim, and now it is not there at all.”
(she) realized that she felt nothing but pity for the creature who had wanted her dead, so she said, “Could it be that the heart you seek is no longer my own?”
The old woman coughed.
The star waited for her to be done, and then she said, “I have given my heart to another.”
“The boy? The one in the inn? With the unicorn?”
“You should have let me take it back then, for my sisters and me. We could have been young again, well into the next age of the world. Your boy will break it, or waste it, or lose it. They all do.”
“Nonetheless,” said the star, “he has my heart.”
~Neil Gaiman, Stardust