That's what a personal assistant is for, to always be there when the boss wants her to be. And to do what he demands. This man wanted to relieve the tension - the assistant was at hand, without hesitation and took advantage of her. According to her cries and sighs conclude - this is the work she likes!
Well, when the blonde twists her ass in front of the trainer's nose, his reaction is predictable. Pulling her mouth onto his pepper and emptying his balls right on his tongue is a good end to the workout.