Flame by Helen Hardt

Her past is coming back to haunt her. His present is haunting him.

Callie Pike always considered herself the plain sister—stuck in the middle between beautiful Rory and vivacious Maddie—so she still can’t believe gorgeous perennial bachelor Donny Steel has fallen in love with her. She should be the happiest woman on the planet, and she is…but her nemesis from ten years ago seems intent on destroying her newfound bliss.
Donny Steel will do anything to protect his family, even sacrifice his ethics and his own happiness. As much as he loves Callie, he knows he can’t be the man she deserves—not until he solves the mysteries of his family’s past and finds out who shot his father.
Though the two erupt in flames whenever they’re together, the secrets they both harbor could destroy any chance for a future together.