Angel's Salvation by Ines Gray

Val has walked the earth for centuries, bearing a curse that would break any warrior—watching his fated mate die again and again across multiple lifetimes. Nine times he's held her as life slipped away. Nine times he's been forced to retrieve the locket that binds them from her lifeless body. Each loss pushes him closer to the edge, threatening to unleash the demonic blood coursing through his veins and transform him into the very monster he fights against. Desperate and running out of time, he strikes a dangerous bargain with a seeress that offers one final chance at salvation, but if he fails, the price will cost him the very thing he's trying to save—the connection to his soulmate. When CIA operative Amani Wilhite awakens with no memory of her past lives or the Nephilim warrior who claims she belongs to him, she finds herself thrust into a supernatural world of fallen angels, ancient magic, and deadly enemies. Val is compelling, dangerous, and utterly convinced they share a soul-deep bond that transcends death itself. But the darkness inside him is growing stronger, fed by decades of loss and the violent path he's walked to find her again. As fragments of their shared past begin to surface, Amani must choose whether to trust the fierce protector who would burn the world down to keep her safe. Together, they navigate a treacherous jungle hiding ancient evils and face enemies who would see them destroyed. Val's internal battle against his demonic nature intensifies with every passing day, and the only thing anchoring him to his humanity is Amani's presence. But breaking the curse that has plagued them for lifetimes will require confronting the very forces that set it in motion. In a race against time and Val's own unraveling sanity, they must find a way to rewrite their tragic fate before evil Rogue Watchers claim Val forever.