"Love matters a little, but luck matters more." The words of thirty-five-year-old David Melman's Jewish grandmother still haunt him. He's scared to settle down. Instead, he dates twenty-something pop stars that he meets through his celebrity-branding business. But when his niece and nephew inform him that he's hit "rock bottom" with his latest inappropriate relationship, David realizes that change might be in order-so when his sister Marcy, with her...