After my wife Ann included Brittany, her sister, in on our marital fun one amazing night last year, there were several times when I wondered if maybe I had dreamed the whole thing. Since the threesome transpired, next to nothing was said about it even to this day. Neither girl showed any evident regret for the experience, but everything carried on like nothing had ever happened or like including your sibling in sex with your spouse was an ordinary thing.
However, it was only a matter of time before that naughty side of my wife came out again. I didn't know that fact at the time, but my sister-in-law surely did. After all, Brittany didn't seem all that surprised by Ann's proposition for the threesome we all enjoyed, and it turns out that Brittany was rather amused by seeing that side of Ann come to life. I have to say, I certainly liked it and wouldn't mind to see more of it.
Ann, of course, was a very attractive girl by anyone's standards, and I don't say that just because she is my wife. Even in her mid-30s now, she keeps a good 5'6"ish frame with all the right parts, including a nice rack and a great ass. Her dark brown hair, brown eyes and tan Italian skin are enough to catch anyone's attention, and most people know nothing of her wild sex drive, an big added bonus for me as her husband. Her sister is no slouch either. Shorter and younger, Brittany boasts an ass and boobs that are right there with Ann's, and her lighter tan and brighter brown hair made for a very attractive woman.
At the turn of spring this year, as winter refused to subside, another unexpected event occurred. It started when Brittany invited Ann and me to a party with some of Brittany's coworkers and their friends one Friday night. My wife and I didn't know anyone at this thing beside Brittany, and we were clueless as to why my sister-in-law insisted that we be there. What Brittany knew better than I was that, under the right circumstances, just a little push could bring out Ann's old wild side, which I was still just getting to know. The threesome had only served to remind Brittany of how Ann's sexuality could be awoken, and, like I already said, Ann's sister apparently derived great enjoyment from witnessing that awakening.
Of course, everything going on in my sister-in-law's head was unknown to me going into this party, and Ann didn't suspect anything either. We wondered why on earth this meaningless party was worth finding a babysitter and staying out well past the time new parents normally turn in. Had it not been for Brittany's incessant insistence, we would have made a hard pass. Well, not to get ahead of myself, but I had my sister-in-law to thank for the next wild step my marriage was going to take.
When we arrived to the party a little after 8 that night, we confirmed we knew absolutely no one there expect Brittany. Even her husband wasn't there, though it wasn't that usual for him to be working up to or even past 8 pm. Brittany introduced us to a bunch of different people, some seeming more interested in meeting us than others, and then we grazed on some snacks. The whole thing was pretty uninspiring, even considering we knew no one there.
People began to filter out noticeably by 10:30. We wanted to be two of those people, but Brittany didn't want to leave, and she was our ride. She kept parking us by the food and drinks in an effort to keep us occupied.
By 11:30, Ann and I were very tired and quite annoyed. It was way too late for us to be out at this stage in our lives, and Brittany was being obnoxious. Only a handful of people were left, mostly guys, and they were all chatting, playing pool or just doing their own thing. I finally begged Brittany to take us home, to which she replied, "Just a few more minutes. Something's about to happen."
Just before midnight, a young couple left for the night, leaving the three of us with about just six men and two other girls. One of the guys, whom we had met at the beginning of the party, said to Brittany something like, "Is that all of them?"
Brittany answered, "Yes!" Right away, the guy went over to the stereo and cranked some upbeat club music and pointed to Brittany.
"Take it away!" he said. Without a word, Brittany moved to the center of the room and began to dance while the others around her began to move to the beat as well. I, still tired and annoyed, was now confused. I couldn't help but notice, though, how sexily my sister-in-law grooved to this song, causing my mind to flash back to that one time I saw her naked.
Another guy called out, "What about your sister?" Everyone looked at Ann.
"How about another shot?" a third guy said as he walked up to us, handing Ann a glass. I looked at my wife, expecting her to refuse, but instead she seemed to lighten up. She grabbed the shot, drank it quickly and waved to me as she joined her sister on the floor, shaking her ass right along. She instantly looked like a goddess.
At that moment, I began to realize what was happening. Over the past few years, I had seen glimpses of how rowdy Ann can get when she's in the right mood, particularly when she's tired, and especially on the rare occasions that she's a little tipsy. This night was one of those moments, and it must have been something her sister had seen before. Now throw in what else I had learned about my wife over the past several months, and I knew I had reason to be excited. While I had mixed feelings about my wife's being the center of attention with all these strange men in the room, it was pretty sexy to see her dancing with her sister like that - and I had no idea how far it was going to go yet.
After just a couple minutes, everyone else had stopped, but Ann kept going to the cheers of the onlookers. Brittany had even backed away, returning only to give Ann one more drink and then head back over to me. Before she said a word, it dawned on me.
"You did this," I said to Brit.
"You're welcome, bro," she said. Of course, she was enjoying it almost as much as I at first, though she wasn't as turned on. In fact, my boner was raging in my pants, and I was so hypnotized by my wife's sexy dancing that I didn't have the presence of mine to try to hide my erection.