Once for All Time (Harlequin Romance, 2666)

Clotilde had worked with Dr. James Thackery at London's busy St. Alma's hospital for three years, but she'd never regarded theirs as anything more than a solid professional relationship. Then tragedy struck, and it was James who stepped in and took charge of Clotilde's shattered world, offering her his unhesitating comfort and support. It would have been so easy to fall in love with him, were he not already committed to another woman...