Grace and I have been married for 19 years. We both enjoy sex, but as with many couples, after a time our erotic life had become predictable and somewhat boring.

In an attempt to remedy this, we began sharing our fantasies with one another. When we went out, we would take note of an attractive couple, and when we got home that night we would fantasize about having sex with them as we fucked each other. This made for some very intense orgasms. I thoroughly enjoyed screwing a strange woman in my mind while ploughing my wife’s body. Often I would use a dildo on Grace’s ass while I fucked her pussy, as she imagined being taken by both me and the man we had seen earlier. She would come harder than she had in years.

After a while we progressed to fantasizing about having sex with couples we knew, and as time went by we found our thoughts focusing on our best friends, Chris and Ellie. Chris had been a friend of mine since the early days, and I knew he had a really big dick. When Grace and I had sex, I would tell her to pretend I was Chris, with his large cock that would fill her pussy to the hilt. “Oh yes, Chris,” she would whimper excitedly. “Please fuck me with your huge cock!” Then I would fuck her with mine, pretending that it was Chris’s wife Ellie writhing and twisting beneath me.

Ellie had actually been an old girlfriend of mine before she met and married Chris, and she was one of the sexiest women I knew. She was tall and blonde, with amazing natural tits and nipples that seemed always to be erect. I still lusted for her, and I’m sure she was aware of it, because she often flirted with me and teased me shamelessly. Sometimes she would come up behind me, brush herself against my back and ask me in a mischievous whisper if I still wanted to fuck her.

As Grace and I continued to fantasy-fuck Chris and Ellie, our desire for them became even stronger, and we began to wonder if they would be open to a kind of wife-swapping arrangement in real life. We knew it might be risking our friendship to approach them openly, but the idea excited us so strongly that we finally came up with a plan.

Our idea was to invite Chris and Ellie over to dinner that Saturday night, and see if we could get them into the right mood. After a few drinks and a good dinner, we would have a brandy or two in the den, and I would put on a porn movie for us all to enjoy. As we did so, Grace and I would start making out, and maybe actually having sex in front of Chris and Ellie, to see if they would get aroused enough to start a little erotic activity of their own. If so, the suggestion to swap partners might naturally come up, hopefully leading to our fantasies becoming a reality.

Grace and I grew increasingly more excited as Saturday night got closer, and also increasingly nervous, but we were determined to carry through our plan. When the day came, Grace put on a red dress with a tight, almost sheer top. She did not wear a bra, so her nipples were clearly visible, dancing inside her top as she walked. She looked radiantly sexy.

When our friends arrived, I saw that Chris, like me, was dressed casually in jeans and a T-shirt, while Ellie wore a pretty low-cut dress that showed off the curves of her breasts, and I suspected that she was not wearing a bra either. She looked drop-dead gorgeous, and when I gave her a hug and a kiss on the cheek, she managed to slide a thigh across my crotch. My hopes for the success of our plan began to rise, and I was further encouraged when I saw the way Chris was looking at my wife.

They had brought wine, and I quickly opened the bottle and poured us all drinks. The wine continued to flow at dinner, and as the evening went on we were all feeling pretty good. Afterwards we retired to the den, where I broke out the brandy. Chris and Ellie sat on the loveseat on one side of the room, while Grace settled in on the couch. Before joining her, I went to our entertainment console under the pretense of turning on some music. Instead, I hit the TV remote, and the porn movie I had selected earlier started playing. The scene showed two women making love. One of them was on her back with her legs spread wide and her feet behind her ears as her lesbian lover fucked her with a strap-on. Feigning embarrassment, I apologized for my mistake and started to turn it off. On cue, Grace told me to wait a minute, saying that she didn’t believe a woman could enjoy sex in that manner. To my surprise, Ellie laughed and said that she loved being fucked with a strap-on. She then gave Grace a wink and suggested that we watch more of the film.

So far so good, and I went over and joined my wife on the couch. The four of us were soon engrossed in the film, and my dick was so hard I needed to do something about it. After a while I started massaging Grace’s shoulders and back, and a few minutes later I reached around and began pinching her nipples. Grace was soon uttering low but audible moans of pleasure. Out of the corner of my eye I saw Chris and Ellie watching us.

As the film continued, Grace whispered, “Take my clothes off. I need to get fucked.” Hesitating for only a moment, I then began unbuttoning my wife’s dress, while rubbing my hands over her breasts, which were soon exposed to Chris and Ellie. My heart was racing. Were we going too far? Would they get up and leave in a huff, or would they continue watching us and enter our world?

Well, they weren’t leaving yet. In fact, my heart leaped as I saw that Chris was actually rubbing Ellie’s breasts through her clothes, his hands going up and down her cute dress. She had moved onto his lap and her dress had ridden up, exposing the black thong that encased her pussy. I continued to play with Grace’s sensitive nipples and breasts, and as I did, I also began to hike up her dress, until her red thong was in plain sight. Grace put her head back on my shoulder and closed her eyes, and I knew she was feeling the excitement of being exposed in front of our friends.

The women in the movie were now grinding their pussies together as they moaned in ecstasy, although by now the four of us were watching each other more than the film. Grace’s breath was coming fast, her breasts heaving up and down. “Oh God, this is so hot!” she whispered into my ear. “I really need to get fucked.” With that I gently pulled my wife’s dress up over her head, then pushed her down so that she was lying on the couch, naked but for her tiny red thong. I then lifted her legs and pulled the thong down and off.

My dick was rock-hard. I moved back on the couch and slid between my wife’s legs, spreading her thighs wide enough so that I had access to her pussy. I could see her juices running down into the crack of her ass; I had never seen her so aroused. As I glanced over at our friends, I saw that Chris had pulled Ellie’s dress down over her shoulders to reveal her truly amazing breasts, and was now pulling on her nipples, which stood hard and erect.

I brought my mouth to Grace’s pussy, my tongue finding her slit and moving between her puffy labia. I licked around her engorged clit and deep inside her pussy. She responded by arching her back and moaning as her juices continued to flow. “Oh God, Sam, I need you inside me now!” she pleaded.

I quickly removed my clothes, and as I did I noticed that Ellie’s dress was now off, as was her little black thong. Chris was also naked, and was moving Ellie into position to be fucked. I watched them as I slowly slid my rigid dick into Grace’s hot wet pussy. It felt as though if was being sucked in by some invisible force. “Yes, fuck me!” she cried out as I began to move inside her. “Harder!”

I pumped powerfully in and out of Grace’s pussy, making sure to grind my pubic bone against her clit. Her feet were high in the air; I could see her toes begin to curl and could feel her pussy clenching, telling me that she was close to the first of what would probably be many orgasms. She kept crying out for me to fuck her hard as her body shook and then convulsed in climax.

As my wife’s orgasm subsided, I looked up to see that Chris was about to enter his own naked wife. Ellie’s perfect body was slumped down in the loveseat, her ass hanging over the edge, her legs spread wide and up in the air, with Chris’s large dick inches from penetrating her beautiful pussy. God, I wished I could trade places with him!

When I rose from my wife, she surprised me by getting up and moving across the room to stroke Chris’s back. “Fuck her, Chris,” she said to him. “I want to see your dick inside that pussy my husband wants to fuck.” Chris could only moan as my incredible wife reached for his cock and placed it at the opening of Ellie’s pussy. “Fuck her!” she repeated.

As Chris’s dick disappeared into his wife’s cunt, Grace began to rub Ellie’s clit with one hand while massaging Chris’s balls with the other. Ellie smiled up at her, saying, “Don’t stop. That feels so good!” She then rested her head against the back of the loveseat and closed her eyes, moaning loudly as her head rolled back and forth.

As Chris and Ellie continued to fuck, I moved to the back of the loveseat, directly behind Ellie’s head. Reaching down, I slowly moved my hands over Ellie’s perfect breasts, while looking at Chris to make sure he was cool with this. He just nodded and went on fucking his wife while I massaged Ellie’s incredible tits, pulling gently on the nipples and feeling their weight with my hands. I was in heaven!

After a few more minutes my wife spoke up. “Chris,” she said, her voice slightly unsteady, “would you fuck me like that? Please?”

Ellie opened her eyes at that, and smiled at her husband, who now looked at her questioningly. “Yes, Chris,” she said to him. “I think you should fuck her, just like you’re fucking me.”

“Oh God!” Chris gasped out. “I’d love to do that! I’ve been dreaming of it for years!” He pulled himself out of his wife, his massive cock standing up like a telephone pole, and he and Grace moved back to the couch where she and I had been fucking. Grace positioned herself exactly as Ellie had been, sitting on the couch with her ass hanging halfway off, her legs spread wide to accept Chris’s big dick. I then watched as, for the first time in our married life, another man slid his hard cock into my beloved wife’s willing pussy.

I turned to Ellie, whose legs were still spread as if in invitation. “Sam,” she murmured, “I can’t tell you how much I’ve missed your cock. We should have done this years ago. Please fuck me.”

My heart was in my throat as I moved my cock to Ellie’s pussy. I slowly pushed her labia open with the head and slipped gently into her body. She groaned as I entered her and started fucking her slowly. I pumped all the way in and all the way out, stroking her clit with my hardness each time I pushed my shaft in to the hilt.

As Ellie and I screwed, I looked over at my wife, sprawled on the couch with her legs open wide as she took the length of Chris’s dick. She was moaning loudly, and it excited me even more to hear her call out, “Yes! Fuck me! Fuck me harder!” My orgasm was building in my balls, and I knew I wouldn’t last long in Ellie’s tight pussy.

Ellie was gasping and shaking, and I realized that she was close to coming also. “Oh God!” she cried out. “Come on my tits, Sam!” That sent me over the brink. I pumped my dick deep inside her as I felt myself losing control, then pulled out. Ellie grabbed my cock and stroked me until I sprayed thick jets of hot, sticky come all over her stomach, tits and face.

Chris lasted longer, fucking Grace in several positions. As I watched them my dick soon got hard again, and Ellie got on top of me and rode me until we both came.

The four of us fucked the rest of the night, swapping back and forth, and had the most amazing sex possible. Since then we are an inseparable quartet, so much so that we sometimes almost forget just who is married to whom. Just one big and extremely happy family.