A Summer Obsession

Secretly Making Love to my Sister-in-Law

This is a true story about the most sexually exciting summer of my life.� It consumed me for those few months.� This is long, but I think you might enjoy it.

A few years ago my wife and I had problems in our relationship.� We�d been high school sweethearts and now in our mid thirties with two kids things were not going great.� We were still good friends, and good parents, but our personal relationship as lovers had really stopped.� Sex was a mechanical exercise for her, and I just couldn't get any passion from her, even a cuddle or kiss was rare.� She'd lie there and let me fuck her whenever I wanted, but that's all she'd do.� I wasn�t allowed to touch her tits, or really anywhere else, let alone put anything inside her except my cock.� I must have gone close to two years without a blowjob from her.� She knew it was a problem and even told me to find a mistress, but that wasn�t what I wanted.� There was only one woman who I knew who I was interested in anyway, and she was my wife�s sister, so completely off limits. Things have come good again, but at the time I did something that still turns me on whenever I think about it and there are periods when I obsess about how to get that time back again.

One day I was asked to take a look at my wife�s sister Kerry�s computer as she was having problems with it.� I�m an IT guy at work, and hate dealing with family and friends computers when away from work and normally try to avoid it, but my wife begged me to help as her sister was recently divorced and had young children so the computer was important to her to keep in touch with others.� I also love Kerry dearly so said I�d do it, but only for her.� I probably need to admit that not only did I love Kerry dearly as my wife�s closest sister so a good friend who I know well, but also, since her divorce I�d noticed something really sexy about her that I�d never been aware of for the years I�d known her, since she was about ten I guess.� When the events in this story happened she would have been in her late twenties. I guess when this story takes place I�d had this awareness of my attraction and lust for her for a little less than two years.

While working on the computer Kerry and my wife were in another room and I was poking around a little trying to figure out the problems.� To my surprise I found these explicit IM conversations saved on her computer, and it was obvious that since she'd been divorced that she'd gone a bit wild in the bed.� I know her well, so knew this was new and also knew her ex-husband had complained to me that she was boring, though he was an idiot so perhaps she just wasn�t interested.� Who knows?� Already being aware of this attraction to her and already having some simple fantasies about her these messages really stocked a fire.� After seeing them I couldn�t stop thinking about her.� As the situation with my wife got worse, I started having cybersex online and one day I created a hotmail account, and started sending Kerry suggestive emails as a 'secret' admirer.� She started to respond and before long we were having some fantastic sex, just through email.� Sitting up jerking off while reading emails from Kerry was wonderful.� I found out all sorts of things about her, how much sex she was having, who with, and even found out she had been having a threesome with a married couple.� Now I was completely obsessed about doing more than just things online, but how?� She�d never betray her sister, they were to close.

During our conversations I�d hinted that I was someone she really shouldn�t be doing this with and that I needed to remain secret.� I bought her a hood, made of a stretch nylon with a blindfold sown in and sent it to her.� I also bought her sex toys and other things and sent them to her as her secret lover.� We�d then use them together by email.� Some things I sent her couldn�t even be used without someone else, but just sending them to her gave us hours of fun with our emails.� Once or twice she even told me how she used some of my gifts with other men.� Eventually I dared her to agree to pick a night to wear the mask and let me come and visit her.� The idea was I�d make love to her and she�d never know who I was.� Just the idea of doing this made us both so hot and I think we just played with the idea for at least a month.� Finally we agreed to actually do it.� I suggested a signal to show me she was ready if I walked past her house.� Her bedroom is at the front of her house, and so I told her to reverse her car into her driveway instead of parking front first, as a signal she was ready.� We�d already agreed what night, but since she had the kids that week we needed a signal that it was OK to precede.� She was also to leave the front door unlocked and the light in her room on and the blind slightly open.

So I approached her house and looked in the crack in the window.� I could see her on the bed, and though due to the angle I couldn't see her well, she definitely had the black hood on.� So I quietly opened the door and went in. �I know the house well, and made my way to her bed.� She knew I was there, and rolled over onto her back and just opened her legs and spread her arms wide above her head, stretching her body and particularly her breasts out nicely for me under her light dressing gown.� She was only wearing the hood and a light dressing gown, tied at the middle.� I pulled the knot undone and opened it to look at the shape of her naked body for the first time.

Let me describe this lady.� She is what many call a BBW.� She is large and round in the right places, she has plenty of padding on her hips and her butt is very large.� She has a nice large tummy, but its not rolls of fat, so its this nice solid shape.� The stretchmarks from childbirth are obvious.� Her large sagging tits are so beautiful I get hard just thinking about them.� All in all she is a mother who has put on weight, and is certainly quite large, but I wouldn�t say obese in a gross way.� She is also tall being about 5� 10�, has a cute face and wonderful deep dark red hair that she wears to a medium length.

I touched her breasts, but didn't for long.� Her breathing quickened and her nipples hardened.� I climbed onto her after quickly removing the clothes I was wearing, some sandals, a pair of cargo pants and a tee-shirt, no underwear; as Id known this needed to be uncomplicated.� I climbed onto her and pushed straight into her, anticipation had made her very wet and I�d been hard long before arriving.� Oh my good it was good to be in her.� I had lusted for her for so long.� Remember, she had no idea who I was.� She knew I was someone she shouldn't be with, but she didn't know why, and I certainly shouldn't have been here.� Basically, that first time I just made love to her, for fifteen or twenty minutes, touching her a little but really just enjoying a very standard fuck, the smell of a new women, and the excitement of being inside of my wife's sister and her having no idea it was me.� I came inside her and then quietly left.� This doesn�t sound much, but sex can be in the mind more than the physical event, and this was certainly true this time.� For the next week I was hard so often it was almost a problem to live my normal life.

As soon as I got home I checked my email, and there was an email from her already.� It�s only a ten minute walk between our houses.� In the email she told me how much she had enjoyed just letting this unknown stranger enter her and cum inside her.� She said she had thought she'd know who I was after our first meeting, but admitted she still had no idea.� She told me how she had come quietly while I was in her, I'll be honest and say I wasn't sure if she had or not, and that she'd masturbated to another orgasm after I'd left while she sat at her computer writing to me.� I was really turned on reading how she said she had sucked my cum off her fingers and was sitting there writing to me with my taste in her mouth and was still dipping into herself for more.� She explained how she was going to go to bed without cleaning up and intended to play with herself and feel our juices between her legs and inside her as she went to sleep.

As exciting as it had been being with her, I wanted to save her for a special treat when I was going crazy at home, and also to limit the risk of being caught.� We kept having great cyber sex, but kept our distance from meeting for a while.� I told her all this, so she knew she was my very special treat and why I wouldn't come over quickly again.� She also kept asking me to tell her who I was, but I just kept refusing, even when she started suggesting ideas.� I'd told her I'd never lie in an email, so I either wouldn't answer a question, or change the topic.� The idea was to let her build theories and get close to who I was, and this worked and was very exciting for both of us I think, as she asked questions and realised I really knew her really well, but then she started asking straight out if I was 'so and so' and one day suggested it was me.� There was nothing to do but lie to this question and hope she moved on.� She made a few other suggestions, but then stopped asking for a while.� Then one day she wrote and said she didn't care who I was, as long as I wasn't her best friend�s husband, or her older sister's husband and that as long as I wasn't one of these two, she absolutely needed me to visit again.� I asked her if I was another friend�s husband or other husbands in the family what she would think, and she said the only limit was on the two who she had already said.� Well, I felt a little guilty that she had no rules except these two guys, and here I was, her older sister's husband.� But I couldn't back off now.

So, about six weeks after our first meeting our second one was scheduled. We live in a satellite suburb of a regional city and not far from both our homes the suburbs end and the farmland starts.� During early summer the grass in these fields gets very long and can be four or five foot in hight.� It�s quite a lot of fun to walk through this tall think grass.� We agreed an exact place for her to park her car and instructions for what to do next.� I was there before her, sitting on a hill overlooking the agreed field, having walked from home, only about 25 minutes away.� People don�t realize how light the night time is on a clear night, and I could see the parking area and our agreed field without any problems at all, yet knew just sitting still no one could see me. I watched her arrive at the exact time we�d agreed and open her trunk and get out a small back pack.� She climbed over the fence and headed towards the only tree in the large field.� When she was at the tree she disappeared into the long grass as she lay down.� I knew what she was doing as I knew she�d follow the agreed script.� First she would lay out a rug to flatten the grass.� This would make a private hollow in the long grass.� It nice to lie under the stars with your only horizon being the long grass around you and on this warm summer evening I thought it would be very erotic.� She would then put on the leather wrist and ankle restraints she�d received in the mail a few days before.� I�d bought good ones, these where solid, not just toys, with large metal d-rings attached to them.� Once the restraints where on, she would pull on her hood and lie down and wait for me.� She knew that she would have to wait for some time as she knew I wanted her to lie and wait in anticipation.

I slowly made my way down from my vantage point to where she was.� I couldn�t be particularly silent through the grass so she must have known I was coming when I was still a good way away.� I worried she might take a peak to see who I was, but then again, she was here now, so what could she do if she did realise it was me?� I�ll admit at the time in some ways I wanter her to know.� In the long grass I actually worried that I might not find her, at night things up close can sometimes be harder to see than when I watched her from the hill.� I found her after circling around a bit.� Lying there in her hollow in the grass with nothing on but her restraints and her hood.� The large heavy tent pegs were placed on the rug as I�d instructed her.� Before doing anything else, even though I wanted to touch her body I pulled her arms and legs into a wide spreadeagle position and pushed the tent pegs through the d-rings into the ground.� Now she was at my complete mercy and there was nothing she could do but trust me.� She obviously already did, or she would never be in this situation, but now she was truly helpless. I undressed and lay down in the hollow next to her.� I just slowly touched her body running my hands over her tummy, breasts, sex, legs, shoulders, neck.� She was breathing hard and small moans would sometimes escape from her, almost like a whimper.� I kept this up for some time, enjoying touching her.� I then got a little rougher with my hands, pulling her swollen nipples, lifting her large heavy breasts with them, pulling at the hair of her sex, not hard, just so she could feel me there.� Using my fingers to massage her shoulders.� Now she was moaning more.� I pushed two fingers into her flooded pussy.� It was so so wet.� I pushed in two more fingers and worked her like this for some time.� She was pushing back on me hard, wanting to be full.� I tried to push my thumb into her also, to fist fuck her, but the angle was wrong and she was bound tight and couldn�t really lift to give me an angle at this, so we just stayed with the four fingers for now, though I noted her desire for more for a future meeting. My hand was so wet with her juice when I finally pulled it out.� I rubbed her own juice all over her tits.� She was talking now, �fuck me, fuck me, please fuck me�.� This was against the rules.� We were not allowed to talk.� But I didn�t really mind at the moment.� I moved down her body kissing her breasts and her stomach then getting between her legs and started to drink the honey that was flowing from her.� She went nuts.� She couldn�t move much, but she was thrashing around now, moaning and begging me to put my dick inside her.� Then she was whispering �I�m coming, I�m coming� and she went a lot quieter for a while.� She tasted so good that I kept eating her for a long time.� I�m sure I drank at least a glassful of her juice, there was so much.

I now moved up her body.� I spent a long time sucking and pulling her tits, and this bought back the moaning and begging again.� I moved up so my cock was at the entrance to her pussy and just stopped there, rubbing the head of my cock just inside her soaking slit.� I then climbed off her and just sat and looked at her.� I don�t know what she was thinking, but I was just enjoying the look of this hooded, bound, naked, helpless, big beautiful woman.� This was my wife�s sister and a totally forbidden pleasure, but here I was.� She looked so hot.� I could tell she was a little confused when she asked if I was still there, so I climbed between her legs and pushed into her.� She was so wet and open!� There was room inside her for more than just my cock and I wished I had a dildo to push into her with me, but that would have to wait.� I knew from our emails that she could get two dildos inside herself and I�d loved to have by cock in her with a dildo.� Instead I got some fingers back down inside her with my cock and my thumb rubbing her clit.� She was moaning and whimpering again and was soon coming and I was soon also.� I emptied a huge load into her, and it took all my control not to yell out as I did.� It was fantastic.� When I finished I rolled off her and just cuddled up to her for a while.� I think I dozed, but it would only have been a few minutes I guess.� I then sucked her nipples and played with her breasts for a while, before having to leave.� I got dressed, pulled the tent pegs and disappeared into the long grass.� I actually stopped only a short distance away.� I could her talking a little to her self, �oh my god� was said a few times, but also, �what am I doing�.� She packed and walked back to her car.� I stood watching her go, well hidden just by being still; I�m tall enough to see over the grass.� I didn�t think I could wait another six weeks!!!

I didn�t get an email that night after this meeting.� I stayed up late waiting for it, as I wanted to talk about it, but nothing came.� I guess it had got late. Again, the following day, nothing, and I was obsessing about getting something I couldn�t work or think the next day, I spent all day staring at my empty Hotmail inbox.� Late the following night an email arrived, she�d got home and gone to bed and slept a deep satisfied sleep.� She�d had an orgasm while sleeping she told me and had spent the following day with a smile on her face, but had been busy so hadn�t been able to write.� She told me how she had felt, tied up by this stranger in a wide open field and how scared and turned on she had been.� She wanted to do it again as soon as possible!� Oh how I�d like to, but again I wanted to keep the experience as a treat and to enjoy what we�d done in our minds just as much as we had physically.� We started suggesting what we�d do next.� This time it was her idea.� It turned out she has never been fucked in the arse and desperately wanted this to happen but had never met someone she felt she could ask.� This surprised me a little, remember, I�d read her IM chats and knew she didn�t have many limits, at least on-line.� We�d also included this in our email sex plenty of times, so though surprised, I was very keen.� She didn�t want to wear the hood at our next meeting either, but knew I didn�t want to reveal who I was, but we worked that out also, again, her idea this time.

After planning for about two weeks, neither of us could wait for six weeks like last time, we agreed to meet.� I resisted for a while, but at the end of the day how can you say no to what was coming?� It took another week for our schedules to match up again mainly she needed the kids to be at their dad�s, so I guess it was closer to three weeks since our last meeting.� This time I had to follow her instructions.� Her house has a void space underneath it that has a door and can be used for storage.� It�s not a basement, just a dirt floor void space where tools and things can be stored.� Its quite large and she didn�t really use it.� It was here that we had to meet.� She told me when and that I shouldn�t worry about my identity being discovered as this void space is totally dark, no light gets in and I sort of knew this as I remembered once discussing with her ex-husband years before how he thought he could easily build a darkroom in the void if it was a little higher and we�d discussed how perhaps we could dig it out to make the space more usable.� Of course she didn�t know I knew this, but with this knowledge I was convinced it would be OK to meet there.� The idea was that she would set up a camping air mattress she had in this space and I should come and let myself in.� At a certain time I should then knock on the roof of the space (the floor of her house) and she would come down to join me.� I didn�t know why she wanted to use this space, but once there found it quite exciting.� It truly was pitch black.� My visual senses were totally useless in there.� There was no light, nothing.� Using an old clich�, I couldn�t see my own hand in front of my own face.� Total darkness is rare I think and this was the real thing.� I let myself in on the agreed night and gently knocked on the floor.� I got the expected return knock and a few minutes latter heard her let herself into the space with me.� We found each other in the dark and found the mattress she had set up.� Without the hood I could kiss her.� This was perhaps one of the most erotic things of all our meetings.� We cuddled and kissed for a long time.� I had had this deep desire to make love to this woman for a long time and though we had had great sex at our last meetings this was more intermit and passionate.� After a long time of just kissing a touch and holding I was inside her making gentle love to her and perhaps enjoyed this first half hour more than any other meeting we had had or would have again.

This wasn�t in our agreed script though, so with a lot of effort I pulled out of her and rolled her face down on the mattress.� I gently, then harder massaged her invisible body, working my fingers and hands from her neck, down her back, spending a long time at her large round buttocks, then down her legs to her feet.� Lying between her legs I was then kissing her back and buttocks, until eventually I had my face resting on her bum, kissing her, sucking her, until I started to work my face between her cheeks looking for her arsehole.� I found it with my tongue and one hand found her pussy opening and as my tongue explored her arsehole and my fingers explored her pussy, she was pushing up into my face moaning and begging me not to stop.� Simple words only and in a soft whisper, �don�t stop, don�t stop�. �

I don�t know how long I ate her arsehole.� I do know it was a long long time.� It was so relax by the time I moved away from it that it would open and stretch as I pushed my tongue deep into her arse.� I moved up her body until my cock was at the entrance to her arsehole.� I wanted to ask her to push herself onto it, but I couldn�t talk of course, it was the rule and would give me away, so I gently pushed into her.� I hadn�t done this for a long time, but knew it could hurt, but she just moaned deeply and pushed back on it.� I was in her tight arsehole, surrounded by her hot body.� I got hands into her pussy and played with her clit, and she did also, as I fucked her deep in the arse.� I came very quickly, then lay down.� She wasn�t finished.� She turned around and started sucking me, the first time she had done this and pushed our bodies into a sixty-nine position to make me eat her.� She is a big heavy woman and she really did have me pinned to the floor in the dirt, and in total darkness.� I was in her control as she fucked my face and sucked my cock.� There was no doubt who was in control at this stage and it was a huge turn on after I�d been running things during our other encounters.� She came and came and I was covered in her sweet honey.� We cuddled and slept for a while then she finally left to go upstairs and I left a little later and went home.

We continued to have great sex online and were planning our next encounter, it was to be in the void under the house again and was to involve her sucking me to orgasm and using toys on each other, but Kerry was really pestering me now (again) about who I was.� She wanted me to tell her, she knew our fun was because she didn't know who I was and that I was someone she shouldn't be playing this game with, but she wanted to know. She pleaded that she was going insane not knowing.� I was feeling really ill one day when I got one of these emails and was also very angry at my wife about our sexual relationship as it was getting worse.� There had been many of these emails over the time we played our game, and this time I just told her who I was out of frustration at being ill, frustration at my wife and not thinking.� I don't know why, it was stupid, but I did.� I do remember the feeling of just being in pain and not wanting to deal with the email, and we had a rule that we always answered each others emails.� We didn't talk by email or meet again after that.� When we see each other, and we do a lot, we both pretend nothing had ever happened.� You don�t know how hard it is knowing what I know about her and what I�ve done to her.� We have never talked or even acknowledged by a look that we know what we know.� I guess she can't even be sure it was me as it could have been anyone of her family�s husbands, or her friends, or workmates that had played this game with her.� One day I'm going to say something and see if perhaps we could start again, but I�m not sure how.

Since these events happened about four years ago, I've told my wife how much I lust for her sister.� It turns my wife on for some reason; it�s almost like "if you cheat on me, that's who it should be".� We don't use it as a sexual turn on, she just gets very loving when I tell her or remind her how much I like Kerry.� When she goes through a period of not wanting much sex, it still happens sometimes, but nothing like the 18 months we went through when the events above happened, she tells me I should find a mistress and I always tell her the only person this could be is Kerry, and she just smiles and says 'that would be OK' though I'm sure she 'knows' neither Kerry or I would ever go down that path.� This weekend, she said something about Kerry having a need to stay with us as she was about to move house.� This got me so turned on, the thought of Kerry being in my house, that I told my wife, while I was inside her making love to her, how much this was turning me on and that having Kerry in our house would keep my hard the entire time she would be there.� My wife got a little annoyed at me, not pissed off, and told me that nothing was going to happen, her sister was not the type to play games and was very conservative and that I should stop dreaming.� Little does she know who her sister can be � What am I going to do while she stays with us?

First written October 2005