Games with the Orc by Kathryn Moon

Sunny has spent years of her life hiding from her own desires and hiding them from those she loves. Forced to face the idea of denying that part of herself forever, Sunny takes a nose dive out of her routine and into her fantasies. All she needs is the help of Monster Smash Agency and one exceptionally talented Orc.
Khell’ar has mastered his work with Monster Smash Agency, satisfying his clients with perfect expertise. Guiding inexperienced Sunny into a new realm of extreme pleasures should be easy, simple. All he has to do is follow her requests, play his part, and not form a mating bond.
But Sunny is orc bait, and Khell’ar is more than even her wildest dreams could concoct.