The Heart Knows Best — Sondra Stanford

It took every ounce of courage Diane Hunter possessed to walk into an office and face Jeff Corbett again. Four years earlier a bitter argument had cruelly ruptured their love. Now, while negotiating over her sister's booking at his Las Vegas hotel, the old magic returned, seductive and compelling.

But Jeff and Diane were logical people. They had never truly trusted their urgent hearts. And now Diane realized that she'd need a special kind of bravery to win back the man she loved--the courage of risk and surrender--the courage of the heart.