It was a romantic notion, that one's hearts belonged to someone. They were organs, pumping blood and vital nutrients to various parts of the body. They were muscles, built of cells, not emotions, and, besides, he regenerated them every time he died, so how could they possibly belong to someone?

All the same, when she kissed between them, he wanted to tell her they were hers. Romantic notion, borne out of imprisonment on Earth, he decided. He was becoming far too like them for his own good. If he learned to be human, he would know the pains that they knew, too.

He dipped his head again and kissed her, more firmly, more confidently.