The Time Traveler's Wife
They want to take the next step.
This bestselling novel doesn't mess around when it comes to the subject of love, and if your sweetheart gives you a copy as a gift, it probably means they don't either. Niffenegger's novel, which Time named one of the 10 most romantic books of all time, tells the story of Henry, a librarian capable of travelling back in time who visits his lover, Claire, at various stages in her life. As the novel progresses, the dimension-hopping inevitably leads to complications—imagine having to date two vastly different versions of the same person at once—but the end result is a picture of true love that cuts across every kind of barrier, quantum-mechanical and not.