Janet Evanovich: Wife for Hire (USA 1990)
From the Publisher:
Maggie never expected her employer to be drop-dead handsome, or to affect her like a belt of bourbon on an empty stomach, but she was too intrigued by his offer to say no... and too eager to escape a life that made her feel trapped. The deal was strictly business, both agreed... until Hank turned out to be every fantasy she'd ever had, and Maggie was so bright, funny, and downright irresistible that Hank fell head over heals in love!
While the town watched, Hank wooed his wife with a charm that had never failed him yet. Could he make her dreams real by proving she belonged in his arms?
Janet Evanovich: Wife for Hire. Bantam Books, ISBN: 0553440535 (August, 1990), Loveswept 422, 182 p., $2.50.