Come Destroy Me by Packer, Vin

He was sixteen the summer he killed the girl - a brown-haired boy painfully aware of beauty and in search of it.

The trouble was, he had a kind of adoration for Jill Latham’s cool beauty and her mysticism. So when she revealed to him her secret and terrible life, it shattered him.

It was as if by killing her, he restored his shattered goddess to himself.