Kim Marshall has worked in public education since graduating from college in 1969, and has published seven books and numerous articles. As a young teacher, he was trained as a sex educator and began developing and teaching a sex education curriculum, reaching more than seventeen hundred young adolescents over the years. <br <br The Great Sex Secret developed on a parallel track. Marshall was struck by some significant gaps in sex literature and popular media and started work on a letter that he planned to give to his own children on their eighteenth birthdays. <br <br To his surprise, this proved to be one of the most challenging projects he'd ever undertaken. Eight years of reading, research, and feedback slowly turned a twelve-page letter into something much bigger, and Marshall decided to share it with a wider audience. <br <br A generous impulse gave rise to this book. Marshall hopes that its ideas will be helpful to many lovers, allowing them to get to the heart of the matter a little bit sooner. Life is short, the geography of love is a challenge, and sexual happiness really matters.