The Counterfeit Lover

Zane Wilder's wealthy family has an un-human nature that his parents have kept hidden from him. He's Ademeni An Indweller. An Inhabiter. He can put on anyone's body-male or female-and commit good or evil deeds using their identity, voice, fingerprints, and sperm or egg. 

Widowed Zane's unknown monstrous capabilities are revealed to him in a dream at a time when his lifelong best friend Jessie needs what Zane can make happen. Jessie is close to dying because of alcoholism, and it's crushing his wife's heart. With his newfound ability, Zane can get Jessie out of the bars and at home to spend the evening with Rachel-making her happy and hopefully prolonging Jessie's life. But when disguised as her husband, he must not use the powers to be intimate with her. The truth that stings Zane's conscience is that deep in his heart, he knows he has long wanted Jessie's girl.