Curse of Seduction by CR Robertson
An evil queen cursed the princes of Purgatory to claim their magic. Only their fated witch mate can save them, but a blood sacrifice is required that demands the highest emotional cost. Ilana has spent two hundred years believing she is a defective vampire, until the day she bumps into the incubus Ezekiel. Her witch powers finally awaken as they sense the presence of her mate. She finally discovers why she has all the strength and abilities of a vampire but the inability to feed. Ezekiel was cursed by The Blood Queen centuries ago. Every time he feeds, she takes something from the woman he’s with – a memory, an emotion, a vital part of them that leaves his lover changed forever. Compelled to feed, can Ilana save Ezekiel before his curse changes her from the woman he loves to a mindless sex slave?