The time traveler's wife by Audrey Niffenegger

A #1 New York Times Bestseller, A Selection of the Today Show Book Club, A Finalist for Book Sense Fiction of the Year -- A dazzling novel in the most untraditional fashion, this is the remarkable story of Henry DeTamble, a dashing, adventuresome librarian who travels involuntarily through time, and Clare Abshire, an artist whose life takes a natural sequential course. Henry and Clare's passionate love affair endures across a sea of time and captures the two lovers in an impossibly romantic trap, and it is Audrey Niffenegger's cinematic storytelling that makes the novel's unconventional chronology so vibrantly triumphant.