Sheikh's Betrayal - Sons of the Desert (Harlequin comics)

When she was a teenager, Desi fell in love with the son of the royal family from the desert country of Barakat. Even though she gave her virginity and swore her future to him, they were too young, and their love too turbulent, ending in the two of them resenting each other. Ten years later, a single phone call from a close friend reunites them once again. "Please seduce Salah. If you don't, then I'll be forced to marry him..." her close friend pleads, as she already as a lover of her own. Desi reluctantly decides to fly to Barakat. Waiting for her there is her former lover, who has since become a sheikh, no longer the young boy she once knew....