I was eight and my brother was ten when we were playing in the woods.  During our playing we did something silly and it resulted in my brother having a near fatal accident.  He had an operation by a surgeon at the scene to save his life.  It left Bruce with lots of scars and glass testicles.  Yes he became sterile even before he had the chance to use it.  In our late teens and early twenties Bruce made very good use of this showing lots of young ladies his scars and the benefits of being sterile.  Then in his mid twenties he met Penny who he calls Princess.   I felt quite jealous as she was absolutely gorgeous.  If you could engineer a girlfriend, I'm sure that there wasn't a single thing I would change about her.  I also had a great girlfriend, Sally, and the four of us got on like a house on fire.


Princess was fully aware of Jim's accident and that he couldn't have kids and she was happy with that.  Bruce married Princess a little over a year later and the following year I married Sally.  By the age of thirty Sally and I had two children and I could see in Princess's eyes her disappointment that she wasn't about to have any babies.  I was still very tight with my brother and he started telling me that Princess was pining to have kids and that he felt bad that he couldn't provide her with any.   He told me they had looked at adoption and because of some of his health problems, from the accident, they had been rejected.  They had also looked at sperm donation and had tried it unsuccessfully a couple of times.  It was now beginning to affect their relationship and my brother was scared that it could even break them apart.


I had no idea that they were going through such troubles.  That's when my brother came out with it, "Will you get Princess pregnant for me?"  I was shocked and I must admit more than a little excited in thinking that I could make my sister in law pregnant.  Then several things ran through my head.  The first was, what if Sally found out, and also how was this supposed to happen, did I come in a jar or something.


Bruce told me that they had been through that route and it hadn't produced any results and as far as he could see the only way was for me to actually penetrate his wife.  I had an uncomfortable erection in my jeans just thinking about it.  I asked what did Princess think about it.  Bruce told me that she didn't want to know who the father was.  I asked how could that be, that if I shagged her she would see me.  Bruce told me that they had agreed that she would wear a blindfold.  I told Bruce I would have to think about it.


A few nights later I was talking with my wife in bed and told her that Bruce and Princess were struggling with their relationship.  To my surprise my wife said she knew as Princess had told her.  She went on to say that Bruce was looking for someone to knock her up, but Princess didn't want to know who it was that impregnated her.  As Sally knew so much I decided to tell her that Bruce had asked me to do the deed.  Sally asked me what had been my answer.  I told her that I told him I would think about it.  To my surprise Sally said I should do it, to help both of them out.  She pointed out that as my brother and I looked [pretty much alike it would prevent awkward questions about parentage.  Then she joked asking if I could imaging the baby coming out looking black or Asian and the questions that would be asked.


A few days later I told Bruce that I would do it, but didn't tell him that Sally knew about it, or that we had talked about it.  Bruce gave me the dates that Princess should be most fertile and asked if I could help out on any of them.  I picked one and asked how will it happen.  Bruce told me that he would see that Princess was in bed ready for me with her blindfold in place.  I joked that it was a bit like in our late teens when we had swapped girlfriends for the night.  Bruce said that he would opt to do a late shift at work that night and would leave the door on the catch.  I informed Sally that it was happening and when.


Sally even gave me a kiss and stroked my cock, telling me good luck, when I went off to fuck my sister in law and try and get her pregnant.  As Bruce had said, Princess was on their bed in just a pink nighty and wearing a blind fold.  She was everything I had often dreamed of.  Princess heard the door open and closed and asked if someone was there.  I knew I couldn't say anything or the game would be up and just made a Mmmm sound.  I think Bruce thought that I would just pop it in, fuck her till I came and then leave.  But I really wanted to enjoy this.


I stripped off my clothes and lay on the bed next to her and started to kiss her.  At first Princess froze like a startled deer in the headlights.  But the more I kissed her and stroked her, the more she relaxed.  Soon she was kissing me back.  I managed to get one of her tits free of the nighty, but it was too tight to get both free.  I gave the tit a good licking and kissing and paid lots of attention to her stiff nipple.  Princess has started to groan as she was obviously enjoying it, so  I slipped a hand under her nighty and found her already damp pussy and stroked it and her clitty.  This produced a gasp followed by a loud groan.


I knew she was already wet enough and worked up, but as I have already said I wanted to enjoy this, so I wriggled down the bed and inserted my tongue in her pussy.  She went wild shaking and thrashing around as I tackled her clitty with my tongue and squeezed one of her nipples with my fingers.  Then she could take no more and almost screamed, "For gods sake fuck me.  Do it now.  Pleeeese," as I took one final lick at her clitty.  I wriggled back up the bed and kissed her again, this time with her juices on my lips and face.  Now there was no hesitation in kissing me back.


I climbed between her outstretched legs and took aim.  I paused for just a second to reflect on the fact that I had longed to do this for so long.  Then with a steady thrust I penetrated Princess right up to my balls.  Her arms went straight round me pulling me to her in an erotic kiss as I started to plow her pussy.  Her legs wrapped around my body.   This felt so good, like making love to a new girlfriend, rather than trying to get my brother's wife pregnant.  Then she was shaking all over and her pussy was having contractions on my cock.  How I never came, and managed to hold back, I will never know.


As her shaking subsided I started to pump her pussy again.  "Oh my god your still going," she exclaimed and then she started to flail her arms around as she went into a second bigger orgasm.  This time I couldn't hold back and I stabbed several times with my cock as I pumped my life giving seed into her womb.  What I hadn't realize in the throws of orgasm was that Princess had knocked her blindfold off with her thrashing around.  It was too late and she had seen me and my cum was somewhere deep inside her pussy.


I slipped a pillow under her arse and told her to keep her legs up as it would enable and assist my sperm to get to her eggs.  I helped her keep her legs up by holding them up and going to town again on her clitty with my tongue saying that orgasms was the best way to get pregnant.  Princess wailed her way through two more orgasms as I licked her pussy.   I was now hard again and rolled Princess over onto her front.    I had just penetrated her again when my cell phone rang.   It was my brother asking if everything had gone ok.   As I told him I had left my cum in his wife I was making slow shallow pumping actions in his wife's pussy.  It was true I had left a load in her pussy but what I hadn't told him was she knew who had done the business of getting her pregnant and I was now enjoying his wife a second time.


I had barely put my phone down when the house phone rang.  Princess reached out and picked it up.  I was close enough that I could hear my brother ask if it had all gone ok.  Princess told Bruce that his friend had cum and she was laid down to help the impregnation work.  She also failed to tell him that she had seen me and that I was back in her pussy, fucking her a second time.  Bruce seemed pleased and blew Princess several kisses telling her that he hoped it had worked and that she was now pregnant.


As soon as he had hung up I went flat out fucking princess from behind.  I had reached around Princess and was rubbing her clitoris with one hand whilst the other played with a nipple.  Princess was moaning and groaning as I plowed her pussy hard for a second time.  When she started to come she was thrashing around again and I had to take both hands away from her jewels to hold her down so I could finish my ride.  What a ride it was as I pumped a second load in her pussy.


After we had calmed down Princess was kissing me and thanking me for what I was doing for them.  I hadn't the heart to tell her I had wanted to do this for so many years and the fucks were just as much for me as it was for her.  I dressed and left Princess laid on her back with her legs held to her chest.  Sadly it hadn't taken, and a month later I was back giving Princess another good seeing to.  Bruce never did know that Princess knew that I was the father of her child.  A little over a year after their first child was born, Bruce had me back in his bed fucking the arse off his wife.  I was lucky that it took three times to get her pregnant again and twice more for their third child.


With just one exception the only times that I fucked princess was to get her pregnant and each time with my wife's full knowledge.   That exception was at a party when Bruce got very drunk and I drove the pair of them home.  Princess was a little tipsy and after putting my brother to bed I made a play for Princess.  She welcomed me into her arms and we made love for quite some time while my brother slept off his drunken state in bed.


As all the other times were to get princess pregnant, the only oral activity had been me on Princesses pussy.  Now the last thing she wanted was to get pregnant so when I got close she had me come in her mouth.  Not only did she swallow, but she sucked me hard again for another fucking from behind and then swallowed my second load.


It seems so strange that my wife pretends to know nothing. I pretend to my brother that I fucked Princess just to get her pregnant for him and that she has no idea it was me. Lastly Princess pretends to my brother that she has no idea who the father or fathers of her children are and to the rest of the world that Bruce is their father.


What a messed up fucked up world where we can't all be honest and just admit that I enjoyed fucking the brains out of my brothers wife and giving her the three lovely children that he couldn't.  It was also a shame that they stopped at three.