The Girl With A Clock For A Heart by Peter Swanson William Morrow/ Harper Collins Publishers, $25.99, 292 pages, ISBN 978-0-06-226749-8 Have you ever known someone who was so infatuated with another person, so head-over-heels and goofy in love that they would do anything—endure any hardship or humiliation—just to be around that other person . . . even when they knew beforehand that they’d be taken advantage of, or