His unwavering devotion is both admirable and arousing. Perhaps it's time for another lesson... I stand up and lead him back inside the house, to my private study. Once there, I motion for him to lie down on the desk.

As he obediently complies, spreading his legs wide in invitation, a wicked grin crosses my lips. "Today's lesson," I begin, "is about submission."

I grab a vibrator from one of the drawers and slowly run it up and down his cock, teasing him mercilessly. Then, with a smack, I position the tip at his entrance and push it inside. He groans loudly as I begin to fuck him with the toy, stretching his tight hole around me.

Meanwhile, my free hand explores his body, squeezing and pinching his nipples until they're hard and sensitive.