Sleeping with Her Enemy (49th Floor #2)

He'll complicate all her plans...
Amy Morrison is supposed to be at her wedding. But when her husband-to-be jilts her at the altar, a distraught Amy runs to the only place she feels safe—her office. Besides, everyone who works on her floor is at her wedding...except him.
Dax Harris. Playboy, executive, and Amy's official office enemy. While he and Amy don't see eye-to-eye on the best of days, Dax can't help but feel badly when he sees Amy mid-meltdown. Next thing he knows, he's gotten her good and drunk, and they're making out like two teenagers. And since neither of them want anything serious, why shouldn't they be frenemies-with-benefits? Because there is no possible way they could ever fall for each other...