Exquisite Ruin (The Labyrinth) by AdriAnne May

In this darkly romantic reimagining of the Minotaur myth, a sorceress and a demon are entwined in sensual battle to escape a deadly maze and reclaim their freedom. In this deadly maze, the most dangerous thing may be the passion between them. Sadaré wakes in a labyrinth, remembering nothing except that she is a powerful sorceress. Her only companion is a hostile immortal named Daesra—beautiful, dangerous, and demonic—who bound his divine soul for power and revenge. Despite their animosity, the two have no choice but to work together to reach the center and defeat the monster who prevents their escape. But the longer they wander, the more deadly and alive the maze becomes—and the more Sadaré finds herself drawn to Daesra in ways she can't explain. As sorceress and demon develop a tenuous truce, the labyrinth gives Sadaré glimpses of their shared history of passion and pain that make her question everything she knows. Unlocking the secrets of her past may be the only way to survive and heal their entwined fates—but as she learns more about the betrayals that brought them to the labyrinth, Sadaré begins to fear that the monster at the center could be Daesra...or even herself. Read more