"Fifteen-year-old Aki Simon has a theory. And it's mostly about sex. No, it isn't that kind of theory. Aki already knows she's bisexual, even if, until now, it's mostly been in the hypothetical sense. Aki has dated only guys so far, and her best friend, Lori, is the only person who knows she likes girls, too. Actually, Aki's theory is that she's got only one shot at living an interesting life-- and that means she's got to stop sitting around and thinking...