Everyone is looking for The One, their soulmate, their true love. But what happens if you find The One, and then you can't get rid of them? This is exactly what happens to Lucy who meets Nate in Italy when she's a teenager. It's love at first sight, and as far as she's concerned, he's her soulmate. Caught up in the whirlwind of first love, they kiss under the Bridge of Sighs and – according to local legend – are tied together for eternity. But when the summer is over Nate returns to America and Lucy returns to the UK and it all becomes a distant memory…

But ten years later fate brings them back together again. And again. And again. Only it doesn't seem as wonderful as it had before. But if Nate's not The One – then why on earth is it proving so hard to break up with him?