Bet Me - Jennifer Crusie

\n \nMinerva Dobbs knows all about risk management, which is why it's such a shock when David, her extremely logical choice for a boyfriend, dumps her three weeks before her perfect sister's wedding: David was not supposed to be a wild card. So when Min overhears David make a bet with his old nemesis--the gorgeous and successful Calvin Morrisey--that Cal can't get Min into bed in a month, she decides that fate has just handed her a stacked deck: she can make Cal sweat his sex appeal and get a date to the wedding, if she plays along and doesn't fold. What follows is a novel of destiny, chaos theory, Krispy Kreme donuts, the spirit of Elvis, Chicken Marsala, and a gamble for the highest stake of all: true love.\n \nBet Me is the winner of a 2005 RITA Award.\n