Virgin Lust by Michelle Gross

Prudence Reaper has been cursed with the sin of lust since she was a child. She’s evaded her desires for over a century by stealing pleasure from men’s dreams. It’s been the only way to hide a small piece of herself from the curse.
Everything changes when she crosses paths with Shepherd Donavan.
Shepherd is one of the last soul reapers left in any world. Not that he cares. Shepherd loathes himself more than the Reapers who drove his kind nearly to extinction. He wants nothing more than to ignore his demon DNA, but that becomes impossible when he lays eyes on the raven-haired beauty who makes his heart skip a beat. Prudence has unlocked an intense, unusual yearning in his soul. One that demands a permanent place in his life.
Unable to ignore lust, Prudence shares pieces of herself with the soul reaper. With each touch, Prudence and Shepherd fall deeper and deeper until their hearts want what the other tries to hide.