Just One Night - Kyra Davis

You should sleep with a stranger, her best friend whispered in her ear--and so begins the intense, erotic journey of Kasie Fitzgerald in Book One of the Just One Night series, a blockbuster bestseller and "an uplifting story in which sex is presented both as freedom and as a metaphor for power" (Publishers Weekly).
Kasie Fitzgerald knows who she's supposed to be. Responsible. Reliable. Predictable. She's an ambitious workaholic who is devoted to the sensible man she plans to marry. But one wild, impulsive night in Vegas is about to open her eyes up to who she wants to be...
Trying her sexy new dress and her luck at a blackjack table, Kasie meets him. Intense. Flirtatious. Dangerous. She accepts his invitation for a drink...and then to his hotel room. She doesn't know his name. But she'll never forget the sex. Hard. Thrilling. Explosive.
So when her mystery man later shows up at her office unexpectedly, she succumbs to his mastery, both in bed and in the boardroom. There's no telling where the powerful, wealthy Robert Dade will lead her. But there's also no resisting her desire...however far she'll go under its spell.
The only question is who she'll be when the journey ends.