Georgia Lyn Hunter - Absolute Surrender - Fallen Guardians, Book 1 (Unabridged)

Born in the flames of Heaven's wrath, he's all things sinful and too dangerous to love. An immortal Guardian, Aethan has walked alone for millennia, trapped in a hell of his own. Until a feisty mortal crosses his path. A female he shouldn't even look at, one who shakes the precarious foundations of all that he is, and one who's determined to walk the edge of danger. All her life, Echo Carter wanted «normal», an impossible feat given that she can see demons. Drawn back to the alleys of New York, she's determined to hunt down the one responsible for the death of her friend. And no man, no matter how sexy, will stop her. Until she discovers a horrifying truth about herself, forcing her to turn to the one man she should avoid. Aethan. But when two stubborn wills collide, a dangerous passion ignites As evil closes in, Aethan has to overcome his darkest fears and claim Echo as his. If he doesn't, he just could lose her to a far more sinister fate. *This is a re-edited version with an added epilogue.