Mates, Dates and Cosmic Kisses by Cathy Hopkins
Izzie is cool, bright and sassy. And when she meets the gorgeous Mark, she's on a real high. He's divine. And he likes her! But why doesn't he call when he says he will? When Izzie loses her perspective and her sense of fun, best friends Lucy and Nesta try to give her a reality check. But there are some things you'd rather not hear... The second book in the highly successful MATES, DATES series that's sold over 3 million copies worldwide.