Lauren F. Winner started a lot of conversations when she published her 2003 memoir, "Girl Meets God," about her journey from Orthodox Judaism to evangelical Christianity. Now, with the publication of her new book, "Real Sex: The Naked Truth About Chastity," Winner, a former Beliefnet books editor, again is turning heads with her frank arguments about Christian sexual ethics. Winner spoke to Beliefnet about everything from why masturbation is a "separation from reality" to how she and her now-husband reined in their sexual impulses while they were dating.What is the sexual ethic of "Real Sex?" Is it as simple as,...