Fallen Angel by Felicity Heaton

Cast out of Heaven for a crime he didn’t commit, Lukas has spent three years searching for a way to prove his innocence and slowly falling for a beautiful mortal female. When things take a turn for the worse, he seeks solace in the bottom of a bottle and ends up finding it in Annelie’s arms. But one moment of Heaven becomes one of sheer Hell when his wings make an unexpected appearance. Now, he’s in danger of losing not only his duty, but the woman he loves.
Annelie fell for Lukas the moment he walked into her bar and she fell hard. The tall, sensual blond sets her heart on fire with his otherworldly green eyes and wicked smile, so when one kiss leads to something more, seizing her chance and Lukas with both hands seems like a great idea… until morning rolls around and she discovers he’s not the man she thought he was—he’s an angel.
Lukas will stop at nothing to prove both his innocence and his love for Annelie, but when he discovers who framed him and she ends up caught in the crossfire, will he be strong enough to protect her? And can Annelie vanquish her doubts and fears to claim the heart of her fallen angel?