ALL IN THE FAMILY
If I had not met Claire first, I always felt I could have fallen for her sister. They are both beautiful women, and although they are both somewhat different, it is still clear I would have been swept off my feet by either one. They look alike, are both easy to be around, and are charming and great to look at.  They also happen to be two of the sexiest women I have ever had the pleasure of being in the same room with.
I knew Claire and her sister were close, but until recently I just didn't realize how close they actually were. When they went to Paris together before we were married, I was happy for them to be able to make the trip, and when they talked about the holiday they always got this roguish look on their faces, it was like a secret they discreetly shared. It was as if there was something about that vacation to Europe that was just between the two of them.
When they talked about Paris, they always exchanged sly smiles and something about France made me think they had enjoyed something I could not be privy to. It was three months after Paris and two weeks after our wedding that my wife told me she wanted her sister Emily to move in with us, to live in our guest room, to be a part of our family. I didn't understand and thought it was pointless, after all they saw each other everyday. I didn't why she had to live with us. I found reasons for it not to happen, although I wasn't against her sister's presence in our home. When she finally said either Emily moved in with us or she was moving out, it hit me like a fright train. I finally understood just how they close they were. Clearly they were "closer" than most siblings ever get, as close and intimate as people can be. What they shared about Paris was each other.
I gave in and after Emily moved in, Claire told me, in no uncertain terms, that she would be spending at least three nights a week in her sister's bed, and it finally dawned on me just how dense I had been. I finally recognized what should have been obvious. I saw then just how close my wife was with her sister.
The day Emily moved in, Claire explained rather casually that she and her sister had been having sex since their freshman year in college.  It was as if it was the most natural thing in the world for sisters to have sex, and I should have seen it. She explained it as if she was telling about her favorite outfit. She unemotion-ally explained they not only loved each other as sisters, but as lovers as well. She told me all three siblings were sexually active with one another and it was absolutely essential that it continue. There was simply no option. I accepted it, or I lost Claire.
It was not just that Claire and Emily were bisexual, they actively enjoyed frequent sex with one another and saw absolutely nothing wrong with the practice. Claire didn't intend to stop having sex with me, but she was determined to sleep with Emily a few times a week and expected me to have no problem with it.
"Don't all guys dream of watching two women have sex?" she asked innocently. "We wouldn't mind if you watched us occasionally," she announced the night she told me she wanted Emily to live with us, and that they had been having sex for years.
It wasn't strange to her, and she told me she had fucked her brother for years. "We love each other," she declared without emotion. "It really is not that unusual," she said. "Many societies allow it, even some encourage it. In the Kibbutzes in Israel they actually promote it."
I said I doubted that, but argued she had researched it and felt no compunction to have sex with her siblings. "Emily and I have beautiful sex. It's not like I am going to get my sister pregnant," she said. I asked what about with her brother. "We always use condoms," she maintained ardently.  "Devon is a wonderful lover," she said.
Both her parents knew and were pleased the kids "got along so well," accommodating the behavior by letting the girls share the same bed since college. They also knew both girls fucked their brother Devon and were happy to see them so "close" as a family. Her mother and father were libertine enough to see incestuous relationships as harmless and family oriented, even healthy sibling interaction. They were pleased to see their children so engaged.
"Couldn't you learn to accept it?" she asked. "If it makes me happy? Would you refuse to let it happen?" I said I would not ever refuse her anything, but incest was illegal and I thought it might be unwise.
"It is also dangerous," I said. "If you have kids it could result in abnormalities." She said heterosexual sex with people not related could also result in deformities, which, of course, is true. "It just isn't as common as in incestual relationships," I said.
"If I am not going to get my sister pregnant," she said, "why not?  With Devon we always wear condoms. We are not careless, but we all love one another," she demanded. "What is the harm?"
I finally agreed that I could see no reason for Emily not to move in with us and I would accept them sleeping together each week. It was hard for me at first, but it was not something I would insist that they not do.
"Would you like to watch, ever?" she asked innocently. I admitted it was a common fantasy, but I didn't think I would be interested.
However, it was not as easy as I had hoped. After she asked, I could not think of anything else but the two sisters having sex. Watching her eat her sister was something I began to dream about, even lust after, and it gave me fantasies I relished.  I imagined them attached by their tongues and pussies to each other, kissing and licking like animals in heat rutting.  I began to think of watching them have sex almost constantly.
Emily was, as was my wife, one very beautiful woman, and the thought of watching two nude women eat one another was something I began to think about persistently throughout the day and each night. I began to read about incest and sisterly love, and the more I read the more I wanted to see it. Claire was right, in some societies it was not frowned upon at all, especially with women.  It got so it turned me on just to think about it and I couldn't get it out of my head.
Finally, after Emily had been with us for over a month, I asked if they would mind if I watched them. They looked at each other and smiled, saying they wouldn't mind at all.  "We would like to have you observe us making love," Claire said. "It is a beautiful thing."