On the second night of a backpacking trip that my wife, Jean, and I took with my friend Luke, I woke up around two in the morning to the sound of voices.

“What about Ron?” I heard Luke whisper in the darkness.

“He’s a sound sleeper,” Jean whispered back. “Don’t worry.” Her whisper was so quiet that I thought at first she’d said, “Don’t hurry,” but either way, it was clear what my friend and my wife were about to do. Somewhat to my surprise, I felt no anger. Actually, I’d seen this coming for some time. I’d noticed the way she looked at him, the way they laughed together, and I had even speculated about just how and when it would happen between them

Jean’s voice churned with desire and sexual urgency as they whispered together, and even though I couldn’t see them, I enjoyed listening. The next sound I heard was the soft smack of lips parting at the end of a kiss, and then came the unmistakable sound of sleeping-bag zippers being opened.

I wanted so much to see what Luke and my bride were doing, wanted to share with them the excitement of their newfound intimacy, but in the total darkness of the camp I had to rely on my imagination, which filled in the erotic picture perfectly. I was a little surprised that they would be so bold as to fuck on the camping pad right next to me, although that in itself was exciting beyond belief. I could feel the movement as Jean slid her body under Luke, and then the pad began to bounce as my friend entered my wife and started moving in and out of her eager pussy. I pictured the fullness of his cock as it pushed between her labia, imagined those puffy petals parting as he slid in. I envisioned her bending her knees, lifting her legs, and spreading her thighs to accommodate his entry.

The kissing sounds became more distinct, and their breathing grew louder as the movement continued. “Oh, yes!” I heard my wife whisper, her restraint almost forgotten, her excitement building. Her breathing turned to gasps as she neared orgasm, and when Luke began to grunt softly, I knew he was coming, too. Fill her up, buddy, I thought, as they both climaxed, suppressing their moans as best they could.

For some time all I could hear was their breathing as they recovered, and then they began to stir once again. It seemed they were moving into a sixty-nine, and this was confirmed when the soft slurping sounds of oral sex filled the air. I pictured Luke’s cock in my wife’s mouth, his tongue lapping at her sex, swiping between her labia and swirling around her clit. This went on for some minutes, until I heard Luke gasping again, and I knew Jean was taking his come down her throat.

I went back to sleep with visions of Luke fucking my wife. I said nothing about it the next day, and they gave no sign that anything had happened. In the afternoon, we took a hike to a small lake with a waterfall at one end, and as we had often done before, we went skinny-dipping in the clear, icy water. The cold water made Jean’s nipples erect, and I kept watching Luke as he gazed at her, thinking of him fucking her the night before.

She did look sexy, standing there naked in the mountain pool, and I could certainly understand why any man would want to possess that body.

Tired from the hike and swimming, we turned in early that night. We had put up a couple of tents, but, as on the previous night, we chose to sleep on the large mat out under the stars. I saw Jean slip out of her panties before she climbed into her sleeping bag, and when I slipped my hand through the unzipped portion of her bag and slid my fingers between her legs, I found her bare and very wet pussy.

“Not with Luke right here,” she whispered next to my ear as I began to finger her.

“I don’t think he’d mind,” I said, loudly enough for Luke to hear. “You won’t mind if I make love to my wife, right, Luke?”

“Of course not,” Luke said. But Jean was not pleased, and she made it clear that she was not about to go along, so I stopped. We chatted for a few minutes, but I knew they were waiting for me to go to sleep, so after a while I turned over and pretended to doze off.

Not 15 minutes later I heard those familiar kissing sounds, then the whispering, and finally the movement of their bodies as they positioned themselves. Fuck her good, my friend, I thought. They must have fucked for two hours, and I listened avidly to every minute, my cock throbbing until I thought it might explode all on its own.

Afterward I dropped off to sleep, but was awakened around three in the morning by a faint sound and some movement next to me. The full moon had now come up over the treetops, and by its light I could see my wife straddling Luke’s pelvis, bouncing on his erection as he pushed it up into her. They went on like that for another half hour, and when she came she gave a stifled cry, quickly covering her mouth with her palm.

Both of them slept late the next morning. When they arose I made some comment about how the hike the day before must have tired them both out, and though Luke said nothing, I detected a blush on my wife’s cheeks. That afternoon she and I fucked at the lake, while Luke fished by himself in a stream by the camp. I knew it was a mercy fuck, to keep me satisfied and dull any suspicions I might have had, but I didn’t mind. We swam nude, and I fucked her in the shallow water at one end of the lake. As I pushed into her, I wondered how long it would take her and her lover to start fooling around that night.

This time, when we turned in, I added a series of snores to my act as I pretended to fall asleep. Confident that I was truly out of it, Luke and Jean waited less than ten minutes before their movements told me they were at it again. Jean sounded more eager than ever, and now she seemed to lose all inhibitions, as though forgetting that I was right there next to them. Once again the moon was almost full, and I lay there with one eye half open, watching them have sex. Jean sat up over him as before, riding his hard dick totally naked, her head thrown back and her tits bouncing with each up-and-down movement. They hardly even attempted to muffle their sounds of passion as they came.

The next day I said I wanted to try my hand at fishing, figuring that the two of them would hike out to the lake by themselves. Which they did. Before they left camp, Jean took off her top and started out wearing only her tiny bikini bottom.

I fished for only a few minutes before starting out after them, as I had planned. I carried my binoculars with me and took the high trail along a ridge, which after about a mile led me to a spot near the head of the waterfall, where I had a good view of the lake and the surrounding woods.

It didn’t take me long to spot my wife and my friend. Luke was standing on a rock at the edge of the lake, and Jean was standing knee-deep in the water, her head coming to just above his waist. From that distance I couldn’t really make out what was going on, but when I put the binoculars to my eyes and adjusted them, I saw what I had expected to see. Luke was hard, his erection standing out from his body, and the tip of it was in my wife’s mouth. They were both completely nude, and she was blowing him right there in broad daylight.

I stood there watching my wife give Luke a blowjob, his cock moving in and out of her mouth, and I was fascinated to see how she worked over his tool, one hand holding the shaft while she took the tip between her lips, swabbing the end with her tongue, then lowering her head as she took most of it in, obviously lodging it at the back of her throat.

I could see the sun shimmering off the large silver hoop earrings she wore, which swung back and forth as her head bobbed up and down over my friend’s cock. Seeing that lovely face working over his hard-on gave me a kind of pleasure I could never even have imagined.

After a while they traded places, with Jean standing on the rock and Luke kneeling before her and putting his face against her snatch. She put her hands on the back of his head and held him against her crotch, pulling him in as he licked and sucked at her pussy and clit.

Something about the familiarity of the way they went at each other suddenly made me think that this trip was not the first occasion on which the two of them had fucked each other, and I began to speculate about how long this had been going on. Had Luke left work early some days and stopped by our house so they could screw before I got home? Or maybe they met somewhere during the day, perhaps on his lunch hour. Did they rent a room, or fuck at his house? Each of those questions intrigued me more than it upset me. I watched them for nearly an hour, until they finally stretched out in the sun, depleted. Then I made my way back along the trail to the camp and resumed my fishing until they came back.

Late in the afternoon it started to rain, and it hadn’t let up by bedtime. Since we couldn’t sleep outside, we were forced to retire to our tents, Luke to his and Jean and me to ours. I knew my wife was disappointed that her chance to have Luke inside her for a fourth straight night had been taken away by Mother Nature.

We read for a while, and then we made love. I was moving slowly in and out of her, savoring the sensation of the inside of her pussy, which had so recently been visited by Luke’s cock as well, when suddenly I stopped moving. With my cock still inside her, I raised myself on my elbows and looked down into her face, which I could see dimly by the low light of the camping lantern. “Listen, baby,” I said to her. “Why don’t you go over to Luke’s tent?”

She stared up at me. For nearly a minute she didn’t speak, studying my face, probably wondering if she’d heard correctly as the import of my suggestion sank in. “If you don’t,” I said finally, “it will be your first night without him this week.”

Jean’s eyes went wide. “You — you know?” she stammered out.

I simply nodded, then smiled at her and kissed her. “I was awake each time,” I told her softly. “I heard the two of you. I even saw you — some of the time, anyway.”

“And ... and you don’t hate me?” she asked.

I shook my head. “Oh, at first I may have felt a little jealous,” I admitted. “But I felt good about it, too. Even excited. After all, the two of you are my best friends. It’s only natural that my best friends have strong feelings for each other. Besides,” I went on, “you were enjoying yourself so much. That was obvious.”

Jean smiled tremulously then, and nodded. “I was,” she whispered. “I love having Luke inside me.”

“I know,” I said. “With the full moon the other night, I could see you on top of him, fucking him. It was the most erotic thing I’ve ever seen. He’s bigger than me, isn’t he?”

“A little, I guess,” she admitted.

“A lot,” I said. “And it’s better that way, isn’t it?”

She shook her head. “Not better,” she said. “Just different. Can you understand that?”

For an answer I kissed her again. “Go to Luke,” I urged her. “You know he’s lying over there thinking about you. Go on and fuck him, suck him, do whatever you want. And tell him I sent you. Tell him I know about it, and I’m okay with it.”

Jean hesitated for just a few moments, but finally she kissed me and got up. Without bothering to put anything on, she slipped out of there and ran the few feet through the rain to Luke’s tent.

It was close enough that I could hear the sound of their voices, though I couldn’t make out what they were saying. I heard a sound of surprise from Luke, and Jean saying something. They spoke back and forth for a while, and then there was silence. And then I heard the familiar sounds of their lovemaking, the gasps, the moans, the loud panting, gradually accelerating until they climaxed together. I smiled to myself in the dark tent and finally drifted off to sleep.

Luke and Jean must have made love for most of the night, because they both slept until nearly eleven the next morning. Luke came out of his tent first, and he and I walked down to the lake, talking about the situation and about how we would handle it. I told him I understood how it could happen, and that not only didn’t I mind, but I hoped their lovemaking would not end now that I had found out. I also assured him this would make no difference to our friendship.

That was two summers ago, and right now Jean and Luke are camping together in the Rockies. The three of us have a wonderful and loving relationship, and now, rather than the two of them sneaking around and doing it in the dark, we often spend the night together, and they leave the lights on in the bedroom so I can watch them fucking. Sometimes Luke and I both fuck my wife at once. We are all very happy with this arrangement, and now we are even thinking of bringing in other people. I’ll let you know how that works out.