Nine months ago Iris, my wife of eight years, gave birth to our first child.

Once her maternity leave was over, we decided to hire a live-in nanny for the baby, as both of us have careers that require us to work long hours. Iris conducted a number of interviews before settling on Susan, a 22-year-old girl who had just graduated from college with a teaching degree. She had been unable to find a teaching job, but had previous experience being a nanny during her summer breaks from college, and when Iris checked her references, all her former employers raved about how good she was with their children.

Susan turned out to be an excellent nanny, and also to be a wonderful help around the house, making meals for Iris and me when we worked late and volunteering to stay home with the baby if we wanted to go out, even on her days off.

My job requires me to travel a lot on business, and four months after Susan was hired, I had to fly out for what was scheduled to be a three-day trip to Chicago. I was able to wind up my business early, however, and found that I could catch a flight home several hours before my scheduled departure. I didn’t bother calling my wife, figuring I would surprise her. Little did I know the surprise was going to go both ways.

I landed at the airport at a little before noon and drove home. I tried to be as quiet as possible when I entered the house, to heighten the surprise when Iris first saw me. The house seemed dark and quiet, but as I walked upstairs I heard the unmistakable sound of passionate moaning coming from our bedroom. The door was partially open, and I stopped dead in my tracks when I saw what was going on.

The room was softly illuminated by three candles, and there, on our king-size bed, was my naked wife, lying on her back with her head toward the foot of the bed, while Susan, also naked, lay on top of her in a 69 position. Both their heads were moving, and between their moans the room was filled with the sounds of slurping as they gorged on each other’s pussy. As if in shock, I stood there and watched them going at it.

I could tell by Iris’s moans that she was on the verge of orgasm, and sure enough, moments later she let out a loud wail as she came. Susan’s head kept bobbing away on my wife’s pussy as her body shook and spasmed.

Once Iris calmed down, I heard her say, “God, that was good! Now you come for me again.” And with that, my wife’s mouth again began working on the younger woman’s pussy, until a couple of minutes later, Susan also wailed out her release.

After Susan caught her breath, she crawled off Iris, saying, “I want to fuck you now.” I ducked back so that they wouldn’t see me as they changed positions, and a few moments later I heard more moaning. When I looked in again I saw that Iris was now flat on her back, with Susan between her outspread legs, wearing a large strap-on dildo which she was now plunging deep inside my wife’s pussy. Their breasts were pressed together and they were exchanging a series of open-mouth kisses as Susan ravaged my wife’s dripping vagina.

The room was again filled with a crescendo of moans and groans, until my wife called out, “Oh God, Susan, fuck me hard!” At that Susan increased the speed of her thrusts until her cute little ass became almost a blur. It was then that I realized that my dick was hard as a rock from watching the two of them doing what they were doing. I unzipped my pants, pulled out my aching cock and began to beat off as I watched this fantastically hot sex show.

As Susan began to accelerate her movements, Iris’s moans got still louder, and she wrapped her legs tightly around Susan’s waist. The two of them rutted together, and Iris soon cried out as another orgasm washed over her. That didn’t stop them, however; Susan just kept pounding away while Iris held on for dear life. She started sucking Susan’s big nipples, which caused the girl to cry out, “Yes! Suck my tits! I fucking love it when you do that!” Hearing this, I realized that this was not the first time these two had been together this way.

When my wife had yet another orgasm, I shot off uncontrollably, and I must have made a some kind of noise, because Susan whipped her head around. When she saw me standing there she shrieked loudly and attempted to uncouple herself from my wife’s body, which was difficult at first, as Iris’s legs were wrapped so tightly around her waist. But hearing Susan’s cry, Iris opened her eyes and let out a scream of her own. The noise woke the baby in the room next door, and Iris quickly disentangled herself and ran out to tend to the crying child, the long thick strap-on cock still sticking straight out from her pussy.

Iris started pleading with me not to be angry, so that we could talk about what happened. She kept telling me that she loved me and didn’t want to lose me. I told her that what I had just witnessed was one hell of a scene. I then sat on the bed and asked her as calmly as I could how long this had been going on. Iris confessed that she and Susan had been having sex for the last three months, whenever I happened to be away on business.

As Iris finished her confession, Susan re-entered the room, still wearing the strap-on and nothing else. As she stood there, I got a really good look at her fine young body. Her full breasts had no sag to them, her tummy was flat as a board and her pussy was shaved bare. She looked terrific, and I could see why my wife would have been drawn to her.

Susan now began telling me that it had all been her fault, that she had initiated the sexual contact when saw my wife’s beautiful body, and things had just gotten out of control. She then said that she didn’t want this to ruin our marriage, and offered to leave immediately.

At that point Iris protested that she didn’t want to lose Susan, because she was such an excellent nanny. She pleaded with me to forgive them both, and not to fire Susan, saying she would do anything I asked in order to make it up to me.

It was then that the idea came to me. At times in the past, Iris and I had talked about the possibility of adding another person to our bed in order to spice up our sex life. This situation seemed like the perfect opportunity, since the girls obviously enjoyed each other, and Susan was a real beauty. So I suggested that Susan be the third person in our bed, on a more or less permanent basis. That way she could go on being our nanny, and the two of them wouldn’t have to go behind my back.

Both of them looked happy at my suggestion, and Iris hugged me and kissed me joyfully. It was only then that she noticed that my pants were still open, my cock still dripping with the last of my come. She smiled and put her hand on my dick, saying, “I guess this means that you enjoyed watching us.” I admitted that their lovemaking had indeed turned me on, and that I wanted to see more.

I stood up then as Susan came up to me and hugged me also, then gave me a smoldering kiss with a lot of tongue. I felt her firm young breasts pushing into my chest, but I could also feel the strap-on poking me in the groin. Susan broke the kiss and started to take it off, but I stopped her, saying that I wanted to see her use it again on Iris. A big smile spread across her face as she replied, “I’d love to do that.”

With that she crawled back onto the bed, and I quickly undressed as she and Iris started kissing again. Susan then told my wife to get on her hands and knees. Iris, with an eager smile on her face, moved into position and wiggled her ass at Susan, who moved up behind her and, with one quick push, buried that whole huge dildo inside her pussy. As Iris moaned loudly, Susan looked at me and asked with a grin, “Don’t you want to get in on this too? You can do anything you want to me.”

My cock was hard again as I reached into the nightstand drawer and grabbed a tube of K-Y jelly. When Susan saw that she smiled. “Oh, I was hoping you’d want to do that to me,” she murmured. “Iris tells me you fuck her ass all the time. Now you can fuck mine while she rides my cock.”

I moved up behind her as my moaning wife began to move back and forth on the dildo in her pussy. I gazed for a moment at that firm 22-year-old ass, then bent down and started licking her wet slit, all the way up to her asshole and back again. Each time I rimmed her brown eye with my tongue, Susan gave a moan of delight, and when I probed her hole with it her moans grew even louder. I could feel her body pushing backwards against my face as my gasping wife continued to thrust back and forth on that monstrous dildo.

After a couple of minutes I told Susan to pull her ass cheeks apart, so I could lube her asshole with the K-Y. I pumped a lube-covered finger inside her several times, then smeared more lubricant on my cock and brought it to her tiny opening. It took several attempts for me to enter her, but finally her sphincter muscle gave way and my cock plunged deep inside her hot, narrow rear passage. “Oh Christ, yes!” Susan cried out. “Fuck me with that big cock! I love it!” Her ass was unbelievably tight, and she made it even tighter by squeezing her butt around my shaft.

Susan then held as still as possible while Iris and I started thrusting at her from each end. We soon got a rhythm going, with me pushing forward as Iris pushed backward, and vice versa. Susan was soon gasping and groaning and urging both of us on. I saw her hands move underneath my wife’s upper body to clutch at her breasts, squeezing them and tweaking the nipples with her fingers as Iris’s cries got louder.

I don’t think any of us lasted more than a few minutes before we came. Iris came first, burying her head in a pillow and pushing her ass tightly against Susan’s body as she screamed through her orgasm. I couldn’t hold out any longer, and when Susan felt my cock starting to squirt in her ass, it set her off as well. I felt her body repeatedly squeezing my cock as I continued to shoot inside her, her body spasming strongly as her shrieks matched those of my wife. Then we all fell forward in one big pile, gasping frantically for air.

A few minutes later I withdrew from Susan’s ass and went to the bathroom to clean up. When I returned the girls were once again kissing and fondling each other. As I crawled back into bed, Susan told me to lie on my back, and when I did so she grasped my semi-erect cock and stroked it for a few seconds. Then she lowered her mouth around it and gave me an unbelievable blowjob, until I was as hard as a lead pipe. This young girl really knew how to suck cock!

Once I was hard, Susan swung her body over mine and guided my cock into her hot, wet hole. As she sank down on it, she let out a long growl, saying, “God, your cock really fills my pussy up!” She then proceeded to ride me, slowly at first, and then faster and harder, with her tits dancing wildly, until we both came.

The three of us spent the night in our bed, but we really didn’t get a lot of sleep. I was awakened a couple of times by the sounds of the girls making love, after which they each rolled onto me and fucked me once again. That night was the most unbelievable night of my life, made even sweeter by the knowledge that it was only the first of many.

Since then the three of us sleep together every night when I am home, and when I am away I know that the two of them are having a ball. And when I return from these business trips, they tag-team me in our bed until I am totally spent. I have found Susan to be insatiable, and she, in turn, has made my wife a very enthusiastic sex partner, who is more than eager to please both of us.

Susan has said that she will remain in our employ for as long as we want her, which has made Iris and me very happy, as in addition to providing us with unending sexual delight, she is such a loving and nurturing nanny to our child. So it’s really just an ideal situation all around.