I decided to make my Advanced Class on the third Tuesday of the month. This gave anyone who might be invited time to plan for participation. My regular classes had become mostly normal again. The initial sexual insanity of me posing with Anton while secretly having sex had been abandoned... for the most part. We still posed in provocative ways from time to time, and since I expected more income, I was able to reintroduce a new female model who, while not engaging in anything naughty, was a very good subject. Pretty, but not distractingly so, and excellent at holding a pose.
My new model posed on Thursdays, Anton and I, or sometimes just I, posed on Mondays. Leon was good to his word, advertising the classes to the artist community at large. Not too surprisingly, my Monday class consisted entirely of young males ranging from nineteen to forty-two., and the numbers increased from seven, to my maximum for the space of fifteen. My Thursday class was less crowded with only six students, and three of them were girls who seemed very eager to draw Anton's lovely body whenever he joined for a pose.
My very first Tuesday Advanced Class was the week after Leon proposed the idea. As he was the only one I'd qualified for the class at that time, he was the only artist present.
Anton and I arrived early as usual but refrained from a quick screw in my office. We set up the stage and lighting, then I had Anton carry out my latest purchase. A large, folding massage table with some... interesting attachments. I thought it would be useful to bring our more horizontal poses up to a better height for viewing and drawing. He helped me set it up, then picked me up by the hips and sat me on it to 'test the support'.
I had my legs wrapped around Anton with his growing bulge nudging against my sex as I wasn't wearing panties under my little skirt, and we were enjoying a long kiss as he started undressing me, when Leon walked into the studio.
"Not staring without me, are you?" he chuckled.
I sighed with some disappointment, but then felt a little thrill race up my back as I realized that the fun part of the evening was about to begin.
"Pick any easel." I said. "You're illustrating alone tonight."
"None of the new ones were good enough?" Leon asked in surprise.
"No, I think there is some talent," I said, "but I want to see what this is like before I make the class open to others."
Anton and I had already discussed the class with Willy, and he too had agreed to allow this one class on a trial basis. I would tell him how it all went later that night. Then we would decide if it would become a regular event. We also talked with Anton about the poses we would use. This first class I decided would consist of four fifteen-minute poses with ten-minute breaks in between. We would do the same pose over again until Leon said he wanted a change.
I explained all this, and Leon seemed to like the idea a lot. "I can probably get all I need in two poses." He said excitedly. "Do you have a couple you'd like to try?"
I nodded eagerly. "This first one will be quite simple and rather... direct." I said. I arranged the blankets and pillows on the floor, finished removing my dress, and got down on hands and knees. Anton stripped and got down behind me, slathering me with a generous amount of sex oil to make our skin slick and glistening. Then he got into position, I arched my back, and lifted my eager smile toward our artist. Anton slid about half of his lovely cock into me, and we held the pose.
"Nice!" Leon said, and moved to a stool that gave him a slightly oblique view of us fucking. He made a few sketches, turned the page on his big pad, and made a few more. He worked fast, not wanting to waste any time with us.
For my part, my poor pussy was alight with hunger. I just wanted to push my hips back and get the rest of my lover's thick length inside me. From the twitching of his cock head in my pussy, I was sure Anton wanted the same. About ten minutes in, he eased forward and pulled me pack, giving us what we both wanted, but breaking the pose.
"Oh, Tesoro!" I moaned, loving the feel of him filling me, but scolding him for his lack of control. "Go back to where you were."
"No, this is good!" Leon said at once. "Hold that pose."
For the next five minutes, I tried to resist wiggling my hips or making Anton thrust into me. It was maddening, and lovely. My pussy got so wet and sensitive that when Leon finally said, "Okay, take a break", I immediately shoved my rear back at Anton, and threw my head back as a little orgasm made me shiver all over.
Anton, also in need of release, grabbed me by my oiled-up hips and started fucking me hard and fast. He urged me to rise up and arch back against him as he took my breasts in his hands, caressing them and teasing the sensitive tips with his fingers. My eyes were closed in absolute ecstasy, so I didn't see what was happening until it happened.
Anton pushed me back down to my hands and knees, and a cock bumped me in the face. I opened my eyes to find Leon there, his pants removed and his cock at full attention. I was quite ready for this and welcomed this second cock to fuck my mouth. It was such a wonderful release. I am not a great fan of swallowing cum like Ginger is, but I didn't want cum dripping from my pussy or in my hair, so I told them both to cum in my mouth. They loved that idea.
Anton was first to warn me of impending cum, and I turned around to suck his cock. When I did, Leon took hold of my hips and thrust himself in deep. I moaned for them both and gulped down my Tesoro's salty cream. Watching me suck Anton and swallow his cum made Leon reach his limit, and I spun around again to suck him to climax.
I remained there, still panting and licking the last traces of their cum from my lips when Anton got behind me, and slid his somewhat softened cock back into my still tingling sex.
"What are you doing?" I gasped.
"Ten-minute break is over, Miss Stefi." Leon said with a huge grin. "Ready? Hold your pose."
Anton made my back arch, and I didn't have the strength or will to resist. I just moaned a little as Leon coached me back into the correct position and resumed his drawing. We managed to complete that session without fucking after, and I rolled onto my back still breathing hard from having Anton get hard inside me. They chatted with me as we rested for ten minutes, and I got up to stretch a bit before we continued.
Leon then had us change positions to have me mounted on Anton in reverse cowgirl, his hand, still a little slick with oil, holding a handful of my hair to make me lift my breasts higher as I strained against him. As this would be the last pose, I didn't so much mind getting the love oil in my hair.
After the second session in that pose, I was once more overcome with lust and need. Sitting on Anton's magnificent cock for so long and watching Leon's eyes roaming over every detail of our fucking had me moaning even before the pose time was over. Every time a little moan escaped me, both Anton and Leon gave a wry chuckle and teased me about being unable to hold my slut within.
The last fifteen-minutes were up, and I bucked my hips on Anton's lap a few times.
"Turn around." Anton said in his forceful tone that made my toes curl. "Ride me the other way."
I got up, turned around, and straddled him again, sliding his whole length back into my eager pussy. He then pulled my chest down to his, slid his hands down to my ass, and grabbed both cheeks, and pulled them apart.
