I averaged two art classes per week during the two 5-week summer sessions. Going to Katherine's office after each class became my regular routine. I kept her updated on my schedule, and, except for two days in early July, she was always there when I arrived. I would strip completely and masturbate to completion for her just as I had done those first two times. If Amber was working for her at the time, she would always come in and watch as well.
The second summer session was ending the first week of August. I did a long pose for a beginning figure drawing class, knowing that it was my last modeling gig until the fall semester started up. When it ended, I took some extra time on the platform to stretch my numb legs. I caught one of the girls watching me massage my thigh, the motion of which caused my cock to bounce just a bit. We smiled at each other, and she went about her business of packing up her drawing materials. It felt so good to be naked and free. I love my modeling job, I thought to myself. It would be another three weeks before I got another chance to model, but I took solace in the hope that I would see Jessica soon. Surely, she had gone home just for the summer and that she would resume her classes in the fall.
As I walked across campus after class, I relived my experience with Jessica in Katherine's Human Sexuality research project, how she looked, how she tasted, how she felt, so that by the time I reached Katherine's office, I had a throbbing erection straining to get out of my shorts. Amber's spot was vacant, and I felt some disappointment. I had grown to love masturbating with her in Katherine's office. It was great with just Katherine, but the fact that she and I were alone together made it more intimate. With Amber, I felt more like a performer, and I wondered what it would have been like to masturbate in front of that whole class. Of course, the sex with Jessica was exponentially better than mere masturbation would have been.
Katherine looked up wordlessly when I entered. Each meeting had featured fewer and fewer words between us. I closed the door and immediately stripped off my clothes. My erection popped out and bobbed up and down as I removed my denim shorts. Katherine's eyes, as always, sparkled as she watched. I took my cock in my hand and gave a few long, slow strokes. A drop of pre-cum emerged, and I used that to lube myself for the faster stroking. Katherine leaned back, put one hand behind her head and kept the other one in her lap. I stroked progressively faster until I exploded into one of Katherine's tissues.
"Bravo!" Katherine said as I tried to regain my breath.
"Thank you," I said.
"You are most welcome."
I threw the tissue away and started getting dressed.
"Are you busy Saturday?" Katherine asked.
"No, not so far," I replied.
"I'm throwing a big end of summer party at my house, and I'd love for you to come."
Katherine and I had always avoided any talk of a personal nature, so I had never even wondered what her house was like. But now that she had mentioned it, I was curious.
"Who all is going to be there?" I asked.
"A lot of people from the psychology department. Students and faculty. And some of my patrons—the ones who helped fund my study. I know a few of them would love to meet you."
I nodded and said, "OK."
"Wonderful!" She grabbed a card from her desk and wrote her address on the back. "Party starts at 4:00, but feel free to come early or late."
I took the card from her, glancing at the address but not recognizing the name of the street.
"Do I need to bring anything?" I asked.
"No, no, just your wonderful self."
"OK." I stood in her office for a moment, fully clothed and feeling somewhat sad that the summer classes had ended. "Thank you for this summer," I finally managed.
"Thank you, Dan. I enjoyed it as much as you did. The fall semester is a lot busier than the summer, so it might be difficult for you to get in. But maybe a few times though..."
I nodded and said, "All right. Well, I'll see you Saturday."
"Good. I look forward to it."
I left, and the first thing I did when I got home was look up Katherine's address on Google Maps. Using the street view, it looked to be in an average middle class neighborhood.
I worked at my parts desk job on Thursday and Friday evenings, but my thoughts kept straying to the party. How many people would be there? And what would they be wearing? That got me wondering what I should wear. Four o'clock seemed early to be starting a formal party, and it was Texas in August. Surely casual shorts and a polo shirt would be appropriate in what would probably be one hundred degree weather.
I'm almost always early everywhere I go, but I didn't want to be the first person at the party. So I forced myself to wait until 4:00 before leaving my apartment and arrived at Katherine's house at twenty after. There were quite a few cars parked on the street, and I wound up having to park about a block away. The nervous jittery feelings started as I walked to her front door. I never liked being in crowds of people, especially people I don't know. I'm basically an introvert, and one of the advantages of modeling for art classes (besides getting to be naked) is that I get to spend three hours inside just my own head.
There was a note taped to Katherine's front door that said, "We are in the back. Please use the gate on the left side of the house and let yourself in." I could hear the sound of laughter and splashing as I walked around to Katherine's back yard. She hadn't said anything about this being a pool party, and there had been no pool on the satellite view of her house on Google. But a pool there was, and, for a residential pool, it was pretty big. Twenty or so people sat or milled about on the patio, and I counted six in the pool. A tall middle aged man was grilling burgers and hot dogs. I stopped and took in the scene for a minute or two before I heard Katherine calling my name.
"Dan, there you are," she said, rushing forward, taking my arm, and leading me toward the patio. "I'm so glad you could make it."
"Me too," I said, although I wasn't too sure about that.
"I want to introduce you to some people." Katherine led me to the man at the grill. "Gene," she said to him, "this is Dan. Dan, this is my husband Gene."
He set his tongs down and held out his hand.
"Good to meet you," he said as we shook. "Katherine's told me a lot about you."
"She has?" I said, still reeling from the revelation that Katherine was married. Why hadn't she ever mentioned that any of the dozen or so times I had jacked off for her?
"Oh yes. This research project is a big deal for her, and you helped her out greatly." Gene finally let go of my hand and resumed his grilling. "You make yourself at home."
"Thank you," I replied.
I saw Amber sitting by the pool as Katherine introduced me to three couples. Two of the ladies were presidents of a couple of different foundations, but I forgot which as soon as Katherine told me. Amber gave me a little wave when she and I saw each other, but she didn't get up. Guests were still arriving, and they seemed to be evenly split between college aged psychology students and older, middle aged academic types. Once Katherine finished introducing me to whomever she considered VIPs, she told me to enjoy myself and to feel free to get in the pool.
"I didn't know this was going to be a pool party," I said.
"Oh yeah. We just had that installed over the winter, and I love it," Katherine boasted.
"But I didn't bring a bathing suit."
Katherine shrugged and said, "You don't need one."
"Well, I'd rather not have to wear wet clothes home."
"So take them off silly," she said and laughed.
I scanned the still gathering crowd and noticed that all of them were conservatively dressed. One girl in the pool had on a rather skimpy bikini; the rest wore one piece bathing suits, with the guys wearing full swim trunks. I did a quick count and out of about thirty people, twenty of them were female.
"You know you want to," Katherine said.
"Is this an experiment?" I asked.
"Maybe."
"Nobody will freak out?"
"Oh, they know me and know the kind of research I've been doing. The sight of an attractive naked man shouldn't faze them. Some of them may even like it."
I couldn't believe I was really thinking about doing this. And I also couldn't believe that I found the thought of it exciting.
"Do you have a towel?" I asked.
"They're on the cart by the back door. Here, I'll show where to change and leave your clothes."
I followed Katherine into the house, grabbing a towel off the cart as we went inside. The back door opened into the breakfast area by the kitchen, which was decorated in a wine/grapevine motif. There was a collection of unopened wine bottles on the bar overlooking a living area. Katherine led me to the right and into the master bedroom.
"You can change here," she said. "Just leave your clothes on the bed."
"You're sure this is OK?" I said as she started to leave.
