Kellan by Barb Han

Of all the ways Kellan Firebrand could have expected to die, being burned alive in his equipment shed had never even made the list. Divorced, and a year and a half shy of his fortieth birthday, Kellan is contemplating pulling up roots and moving away from the only home he’s ever known. Until he finds himself locked inside a burning shed. A faint cry for help makes him realize he’s not alone…and someone seems intent on killing them both.
Kelsey Sheppard left home too young, got married to a would-be famous musician, and has been paying the price for her missteps ever since. But her biggest mistake—and secret—has her running for her life and to the one man she could never forget.

The one who got away brings danger to Kellan’s doorstep. But he never forgot the person who imprinted his heart as a teen and he’ll risk everything now to keep her safe. But will her secret destroy them both before they get a second chance?