Left for Dead, I Became the Nightmare King’s Bride

My boyfriend of ten years threw me into a horde of monsters to save his childhood crush. He thought I’d survive, forgive him, and crawl back. Instead, I broke our soul pact and became the bride of Lucien, the terrifying ruler of this cursed realm. Now that the monster he feared is treating me like his greatest treasure, will my ex finally realize what he threw away?