BookendsBy: Jane Green Jane Green, author of the best sellers Second Chance and Straight Talking, examines friendships and their limits in her highly entertaining novel Bookends. On the shelf, but still best friends . . . Cath is scatty, messy and guarded. While Si is impossibly tidy, bitchy and desperate for a man of his own. They are total opposites but equally unlucky in love. And they've stuck together through thick and thin. Because that's what best