Rosie and Alex are destined for one another, and everyone seems to know it but them. Best friends since childhood, their relationship gets closer by the day, until Alex gets the news that his family is leaving Dublin and moving to Boston. At 17, Rosie and Alex have just started to see each other in a more romantic light. Devastated, the two make plans for Rosie to apply to colleges in the U.S.

She gets into Boston University, Alex gets into Harvard, and everything is falling into place, when on the eve of her departure, Rosie gets news that will change their lives forever: She's pregnant by a boy she'd gone out with while on the rebound from Alex.

Her dreams for college, Alex, and a glamorous career dashed, Rosie stays in Dublin to become a single mother, while Alex pursues a medical career and a new love in Boston. But destiny is a funny thing, and in this novel, structured as a series of clever e-mails, letters, notes, and a trail of missed opportunities, Alex and Rosie find out that fate isn't done with them yet.

Sometimes you have to look at life in a whole new way...

From the bestselling author of PS, I Love You comes a delightfully enchanting novel about what happens when two people who are meant to be together just can't seem to get it right.