Every Last Breath (The Dark Elements) by Jennifer L. Armentrout

At seventeen, Layla is living a life fraught with supernatural challenges, torn between two worlds that threaten to consume her. As the only half-demon in a powerful lineage, she grapples with her dual identity while navigating the tumultuous landscape of love, loyalty, and betrayal. The intoxicating connection she shares with the enigmatic Zayne and the mysterious Roth puts her heart at risk, forcing her to confront the reality that some choices can lead to irreversible consequences.

Against a backdrop of dark forces and impending danger, Layla's journey becomes one of self-discovery and empowerment. Each decision she makes draws her deeper into a conflict that may not only determine her fate but also the safety of those she holds dear. The stakes are high as she must choose whom to trust amidst shifting allegiances and the lurking threat of demonic forces.

As her story unfolds, Layla learns the true meaning of sacrifice and the lengths she must go to protect those she loves. With every last breath, she fights to define her destiny in a world where love and darkness intertwine, testing the limits of her strength and resolve.