Mulberry Hollow by Denise Hunter

Contractor Wes Garrett is nearly finished hiking the Appalachian Trail in honor of his recently deceased best friend when he falls terribly ill. He stumbles into the nearest town and soon finds himself indebted to the beautiful young doctor who owns the clinic. In lieu of payment, he proposes a trade that will keep him in town—and away from obligations to his best friend’s sister—for several weeks.

But as Avery and Wes spend time together, their friendship begins moving into unexpected territory. Soon they both begin to question their plans for the future. But will Wes be able to let go of the debt he owes his best friend? And will Avery find the courage to risk everything for love?