The Glass Girl - The Demon Door, #3

Love opens all doors.but betrayal locks them forever. Newly blessed (or cursed) with wings and fire, Prince Rhuun of the demon realm of Eriis sees hope for his life on the human world of Mistra with his fierce human lover, Lelet va'Everley. She literally went to hell and back to save him, and she's not about to let anything-or anyone-ruin their perfect future. All too soon, the claims of family, duty, and justice force Rhuun and Lelet to confront new griefs and old mistakes as they attempt to restore balance to the throne of Eriis.
But, with every jealous rumor and each vengeful whisper, friends turn, family schemes, and forgotten enemies creep from the shadows. Treachery in Eriis and betrayal in Mistra jeopardize what Rhuun and Lelet have fought so hard to build, threatening to tear apart the two lovers, their families, and even their worlds.