Bella secretly married her childhood sweetheart, Stevie, over a decade ago; they were at university, two big kids playing at being grownups. When it all unravelled and reality hit, Bella simply got up and left. And the secret remained a secret.
Years later, Bella meets Philip and, despite her vow never to marry again, she can't resist him. He is a catch. Funny, charming, interesting and kind. Only hitch is, she's still (technically, anyway) married to Stevie. Bella, typically, just ignores the problem. And the moment to tell Philip never quite seems to arrive.
So Bella plans never to reveal her secret - after all, it's just a silly piece of paper, lodged at a registrar's office in Aberdeen, isn't it? She hasn't seen Stevie for years - probably never will again. Except that Bella's best friend Laura has fallen in love, and when she introduces her new man to the gang it is none other than Stevie. Could things get any more complicated? Only if Bella and Stevie fall in love with each other again...