The basis for the motion picture starring Lily Collins and Sam Claflin!

What happens when two people who are meant to be together can't seem to get it right?

Rosie and Alex are destined for each other, and everyone seems to know it but them. Best friends since childhood, they are separated as teenagers when Alex and his family relocate from Dublin to Boston.

Like two ships always passing in the night, Rosie and Alex stay friends, and though years pass, the two remain firmly attached via emails and letters. Heartbroken, they learn to live without each other. But destiny is a funny thing, and in this novel o f several missed opportunities, Rosie and Alex learn that fate isn't quite done with them yet.