The Driftwood Beach (Harlequin Romance)

He wanted an unusual kind of repayment Alone and penniless, Emma didn't have much to live for--until she met Simon Charles. It was he who forced her to get a grip on life. In return he expected Emma to travel with him as his "female attachment," a sort of cover for some mysterious business he was involved in. Emma wasn't sure she trusted this handsome enigmatic stranger--or her own traitorous reactions whenever he came near. Harlequin Romance #2481, June, 1982.