Carole Mortimer 
Tangled Hearts 

In this classic romance by USA Today-bestselling author, a woman is drawn to her widowed brother-in-law.It’s been ten years since Sarah Harvey has been permitted to see her only nephew. So now that the boy has defied his father and come to visit, Sarah vows to do everything she can to make their reunion happy and long lasting. Even if it means facing brooding-and devastatingly sexy-Garrett Kingham again . . . Sarah has always been in love with Garrett. But after his convenient and destructive marriage to her late sister, pursuing her feelings for Garrett is strictly forbidden . . .Originally published in 1987