Time Traveler's Wife

I just finished a book that is enthralling, mysterious, and heart-achingly romantic. It's called The Time Traveler's Wife, and tells the story of a couple's romance; the twist is that the male, Henry, periodically slides several years into the past or future, only to return within hours, days or years. The time travel aspect might sound goofy, but it is used to great effect and leads to some of the most poignant moments of the book. A must-read.