Northern Twilight by Samantha Young

She’s the girl he left behind. He’s the boy she tried to forget. But after seven years apart, one passionately reckless night will tie them together forever …

As teenagers, Callie Ironside and Lewis Adair were inseparable. So much so, Lewis still can’t work out where it all went horribly wrong, or why he’s spent the last seven years in London away from the love of his life.
Callie knows exactly where it all went wrong and while she tried to move on—learning pastry techniques in Paris and dating French men—returning home to Ardnoch to work in her mother’s bakery only reminds her of the future she lost with Lewis.
But when a visit to London brings them unexpectedly together, the passion, pain and animosity between them leads to a one-night stand. For Lewis, it’s the beginning of winning Callie and his life in Ardnoch back. For Callie, it’s a mistake that’s shaken up the devastating heartbreak she fought hard to forget. However, Lewis is determined to fight for her, and proves it when their night together results in more than just unresolved feelings.

As they come to grips with impending parenthood and the mistakes they’ve both made, Callie and Lewis will not only have to decide to fight for a love that has endured so many years apart, but a mysterious adversary who seems intent on destroying the future they’re building together.