She stroked me to a near frenzy while I fondled her ass and kissed on her neck and shoulders. At last she pushed downward on my shorts, sending them down my leg and freeing my cock.
"I don't think this is a good idea." I whispered to her.
"Shhh." She whispered into my ear, her hand grabbing me once again. "I want to make you come again."
"But…"
"Shhh." She repeated, silencing me by putting her mouth to mine. She kissed me for a second and then said, "Take off my shorts."
"Your shorts?" I asked, wondering uneasily what she had in mind. She didn't want me to make love to her here, in this lake did she? That certainly wasn't the first time of love with her that I'd envisioned. We also had no protection. "Nina, I think we should stop and think about what we're doing."
"I know exactly what I'm doing." She told me, giving my cock a few strokes. "Now take off my shorts."
The demanding tone of her voice drove me to action. Too aroused to fight anymore I reached down and unbuttoned her. I slid down her zipper and then pushed the shorts down her legs. She kicked them free and they floated up to the surface next to her. With her free hand she grabbed them and tossed them onto the shore where they landed with a wet plop. She was standing before me only in her bathing suit now. Her face was flushed with excitement.
"Now come here." She told me, pulling me towards her by the cock. She pulled me until I felt the head touch the soft flesh of her inner thigh. She slid it up and down a few times and then the top of my shaft was touching the material that covered her crotch. She let go of my cock and pulled my groin into her, closing her thighs around it. I felt the soft, baby smooth skin of her upper legs engulf me while the top of my shaft pressed firmly against her mound through the bathing suit.
"Ohh." She sighed, gyrating her hips a little, obviously enjoying the pressure in her nether regions.
I certainly was. It wasn't as pleasurable as being inside of a vagina, but it was very nice indeed. I moved my hips back and forth a little and her thighs rubbed the sides of me, sending pleasure radiating upward. Nina began to move back and forth too, increasing the pressure on her mound while her hands pulled at my ass, driving me into her.
We were both panting as my hips moved, driving my cock between her thighs. She kept them just tight enough against me to generate a pleasant friction but not so tight that abrasions would result. Her hands squeezed and fondled my ass and my hands did the same, dropping down and grabbing her cheeks, my fingers sliding beneath the elastic and touching bare flesh.
I had never done anything like this with anyone before, in either life and I found it blackly exciting. Especially when I considered that the woman who had initiated this was Nina who, though I loved her deeply, I'd figured to be a bit sexually repressed due to her upbringing and history. I guess I was wrong about that.
"Do you like it?" She breathed, her eyes shining as she watched my face.
"Yeah." I panted back at her. "Where did you learn this?"
"I read a lot." She told me, giving my ass an extra hard squeeze. "And some of the stuff I read is not exactly what my mother would approve of."
"I guess not." I answered, kissing her neck.
"I want you to come." She told me, whispering in my ear. "I want to feel it."
I didn't answer her, just continued to thrust in and out against her thighs, against her nylon-covered sex. Her tongue dipped into my mouth again, finding and attacking mine, her lips sucking obscenely at me. Nina had learned the lessons of kissing well. Finally I could take it no more. My hips began to blur as I drove in and out of her thighs.
"Yes." She told me, breaking the kiss for an instant, leaving a string of saliva stretched between our mouths. "Come. I want to feel it."
"Ahhh." I groaned, feeling the sensation beginning. I pulled her tightly to me and pumped like mad, my body out of control as the spasms began. She kissed me hard and squeezed my ass with all her might as I began to shoot between her legs. My semen shot out and splattered against her thighs, against her crotch. Some of it floated upward in the water, sticking to her swimsuit. It went on and on, seemingly forever before I finally relaxed in her arms.
We stayed that way for a moment and then finally I looked up at her. She was smiling. "That was interesting, wasn't it?" She asked me playfully.
"You never fail to amaze me Nina." I told her. "Tell me about this book you read this in."
A giggle. "Let's just say that you'd be surprised at what kind of things you could find at the public library."
I reached down and pulled my shorts back up, tucking myself inside and fastening them. I suggested we move a few feet from where we were.
"How come?" She wanted to know.
"Because the evidence of our indiscretion is floating all around us in the water." I said. "A lot of it is stuck to your swimsuit."
She looked around and saw the little stringy globules floating everywhere. The sight gave her the giggles, especially when she saw it sticking to her suit in various places. "What would my mother think about that?" She asked, moving with me out of the danger zone.
I spent a few minutes splashing water over her to get rid of the residue and then dropped my hand down between her legs.
"What are you doing?" She asked, making no move to stop me.
"Just making sure you're clear down there." I said.
She was, but I made extra sure, running my hand all over her thighs and the crotch of her suit. One of my fingers slid deftly inside, touching hair and the swell of her vaginal lip. She jumped a little at the contact.
"You know." I told her. "It seems the least I could do is return the favor you just did for me." I slid my finger between her lips, pushing the crotch of the suit further aside. Despite the fact that she was under water her passage was slick with her juices.
"If you insist." She breathed.
It didn't take long. She held tightly to me as my fingers moved in and out and my hand made circular motions across her clit. When she came her pelvis humped up and down on me and her teeth bit lightly into my shoulder.
We spent a few more minutes kissing and holding each other, just enjoying the touch of our bodies together. Finally we decided we should start working our way back. She went and retrieved her shorts from the shore, washed the dirt off of them and then put them back.
We made sure to make enough noise as we headed back to the boat so that Maggie and Mike would not be caught in an embarrassing situation. Our ploy worked. When we trodded ashore we found them lying on their stomachs, very close together. Their eyes were shining with the glow of new discovery.
We spent the rest of the day at the lake, either lounging on our island or going out for skiing runs. We had to refill the gas tank on the boat once, it really was a gas-guzzler, but otherwise it ran perfectly. By the time the sun started to set we piled in the boat once more and began heading at a sedate pace towards the launch ramp. As we idled along slowly, watching the sun sink towards the mountains, watching the light fade from the sky, feeling the warm summer breeze caress our exposed skin, Nina cuddled up beside me. Behind us Mike and Maggie were also pretty chummy. He had his arm around her shoulders and they kissed frequently. You could almost taste the romance in the air.
There was of course a considerable line of boats waiting when we reached our destination and we had to wait until well after full dark before we could pull up to the ramp and put the boat back on the trailer. We didn't mind. We sat with our arms around our respective companions and watched the brilliance of the stars as they came out, even seeing the occasional satellite as it passed overhead.