Everyone knows there are two types of people in this world: those who participate in sex studies, and those who don't. At first, second, and third glance it would appear that I, Tessa Stewart, professional wallflower, adventure non-seeker, risk avoider, party animal (if that animal is a respectable sloth who doesn't make much noise and goes to sleep promptly at nine pm), the girl who is remembered by all her collegiate peers of four years as...