Yes-Man by J. M. Snyder
Bryce Howerton is an executive assistant for the president of Eckhart Industries, and he's very good at his job. On any given day, he must juggle his boss's hectic schedule with his own -- meetings, interviews, correspondence, office management. Not to mention the daily conferences with Mr. Eckhart himself. Bryce is kept very busy, indeed.
But he knew the requirements of the position when he took the job. In fact, Mr. Eckhart gave him a taste of his duties during his interview. It was unconventional, to say the least.
And hot, and erotic, and taught Bryce everything he'd need to know to become Mr. Eckhart's yes-man.