Sublime by Christina Lauren

A boarding-school ghost romance follows Colin, a reckless teen orphan, and Lucy, the spirit of a girl murdered on campus ten years earlier. Colin deliberately induces near-death hypothermia in a frozen lake to touch Lucy in an in-between realm, while flashbacks and news reports describe her abduction, throat-slitting, and heart removal.

This book’s main concerns are; explicit sexual activities/nudity, self-harm, sexual dialogue, suicide, and violence.