Some universal truths refuse to be ignored.Peanut butter and jelly are a match made in heaven. Spaghetti and meatballs are best friends forever. And guys like Tyler Knight don't go for girls like Cam Emerson.She knew from the second she met him that he didn't belong on her bookshelf, the six-foot-six ex-tight end with a face so all-American, it could have sold apple pie. So she shelved him next to the supermodels and rock stars and took her place...