Far Beyond Repair by A.K. Evans

Scarlet Morgan knows all about happy endings. As a best-selling romance author, it’s her job to be an expert on the subject. It’s just too bad her own story doesn’t write so well.
Ryker Holt can build a car from the ground up. While there isn’t much the highly-skilled mechanic can’t fix when it comes to his profession, it’s Ryker’s personal life that’s still in pieces.
Scarlet thought she found forever in Ryker until, one day, he broke her heart and walked away.
Years later, filled with regret, Ryker wants Scarlet back. But he’s worried the damage is already done, and what they had between them is far beyond repair.