Back Where He Belongs by Isobel Starling

Back in Scotland after five years working in Australia, Kier Campbell finds himself stranded on a road in the Scottish Highlands on Christmas Eve. He needs to get to the next village urgently or freeze to death in his broken down hire car. Kier hikes down the icy road and as he walks memories of the life he’d run from-and the love he’d abandoned in Scotland return to haunt him.
With a blizzard fast approaching, a passing motorist finds Kier and offers him a lift. He is surprised to recognize the driver. As the weather worsens he realizes they is no way he will reach his parent’s farm, and so is stranded with his savior for the holidays.
Kier’s one Christmas wish is to make up for the mistakes he made all those years ago, but, curiously, he finds he has an unexpected rival for his lover’s affections…