Luck of the Draw by Flora Burgos

Her job is to pose prettily on the arms of rich and influential men and be charming and silent. She has the luxury of picking and choosing her clients, and she is very particular. Normally, she would never agree to a week-long gig with a man she’s only just met, but there’s just something about Nick Foster that calls to her on a whole other level.
Instead of the gamble of high-risk surgery, the route his father had taken, where saving lives is the name of the game, Nick is a gambler of another sort. The kind that plays cards for money and wins. Days from the biggest score of his life, a chance encounter with Harlow changes both of their lives in ways they’d never imagined possible.
What started as a straightforward business deal has turned into so much more, and that week just might last forever.