I was born the younger one of a pair of twins.  My father was a fairly wealthy man and was a real car fan, so we got named Austin and Morris.   My older brother, Austin, was far more competitive than I was.  He walked first, he talked first, in fact he had to be first in everything.  As we grew older, unlike most twins, we moved further and further apart.  Even at an early age I disliked him.  After school we went to different Universities.  It felt like it was the first time that I was a single person and not just one of the twins.

We both graduated at the same time and when I moved back into my parent’s house, so did my brother.  Unlike him I had found the love of my life, Betty.  Within three months we got married.  Our father set us both up in businesses of our chosen fields.  Guess what Austin’s business almost doubled in size in just twelve months where mine had grown by just a small amount.  At a family do Austin rubbed it in just how well he was doing.  It was typical Austin.  I didn’t care I was doing ok and quite contented as things were.

It took three years for my business to double in size.  I was quite happy and had a good work life balance with Betty.  I was thrilled to bits when Betty told me she was pregnant.  My parents were also thrilled.  I could see that Austin wasn’t happy, for once I had done something before he had.  At the time our twins were born Austin was sailing somewhere in the Med on his yacht. 

A few weeks later when Betty and the twins were home, Austin arrived home with his latest girlfriend.  Andrea was an absolute stunner.  Not that I would have expected anything different from Austin.  It was just six months later when they got married.  Yes, his wedding was at least double the size ours was.

Quite surprisingly Andrea and Betty hit it off and became good friends.  She would spend lots of time around our house helping Betty with the twins.  I often heard tit bits of conversations and I deduced that she wasn’t that happy with her life with Austin.  He was either working or off enjoying himself and there seemed little time for Andrea.  I felt a little sorry for her having been on the sidelines like she now appeared to be.

Both of our businesses were going through a growth spurt and like Austin, I found myself having to spend much more time at work.  He seemed to get on top of it quicker than I did, and I was getting lots of pressure from Betty and the twins.  I couldn’t see an end to the work and although I had good support at work it didn’t detract from the time, I had to put in.  Then to make thinks worse, Betty announced that she was pregnant again.  I was chuffed to bits, but it was another pressure that I could have lived without.  Fortunately, the work started to slow up and I was able to go back to a better work life balance.  Austin was still away from home for many more hours than what I was.  Andrea seemed even more unhappy and even depressed.

I heard more snippets of conversation where Andrea said she envied us and our family.  She also said that she would love to have a family, but the fact that Austin was rarely home she couldn’t see that ever happening.  At a family do I again heard Andrea telling my mother that she was desperate to have a child, but she couldn’t see that happening.  A few weeks later I was talking to a mate who knew both Austin and I and the discussion got around to children.  I told him that Betty and I were expecting our third child.  He joked, was I sure that it was mine and not Austin’s.  Then he added that he thought that Austin had sired three perhaps four children by other women.  That set my mind racing.  I know he joked about it but when Betty got pregnant, we were not making love very often due to the work I was having to do.

I started to watch what Betty was up to far closer than what I would normally do.  It wasn’t long before I discovered that she was on her own every Thursday as my mother had the kids that day.  I decided to watch her.  I used a works van and sat at the end of our road to watch her.  She went to the hairdressers.  Then I was shocked when she went to a flat in town and let herself in.  It wasn’t long before I saw Austin turn up, and also let himself in.  I was angry and upset.  My wife was cheating on me and with my brother.

That night I challenged her about it.  Betty, in a flood of tears, came clean and admitted that she had been seeing him.  I asked how long and to my shock and horror she had her first shag with him before we were married.  I asked about the twins and the baby that was on its way.  She said the twins were definitely mine, but she wasn’t so sure about her current pregnancy.  She said she would stop seeing him.  I told her that I had heard that he may have fathered other babies as well.  Betty said that he had, and he had also paid for several abortions over the years.  I asked her why him and she couldn’t answer me.

I decided that it was time that I got even with Austin.  Over the next few weeks, I kept that eye on Betty and discovered that she was still seeing Austin.  At least on Thursdays I knew where he was.  I also started to pay Andrea more attention.  It wasn’t that hard to end up getting her alone.  I told her of my suspicions that Austin was shagging my wife right now.  She told me that she had suspicions that Austin was playing away as she had found a condom wrapper in his trouser pocket some while back.  I moved in for a kiss and Anrea didn’t put up any resistance and in fact kissed me back.

That soon led to her being naked and draped on the sofa with me on top.  She had insisted on a condom, which I hate, but anything to get into her pussy.  After that I would see her whenever I could.  On the fifth of sixth time, I persuaded Andrea to get into the doggy position while I was meant to be putting a condom on.  Well, I didn’t.  Oh, how much better that felt in her hot pussy.  I came deep in her pussy after a long sexy slow shag.  I was sure that Andrea realized that I had just fucked her bareback and come in her.  After that she never once asked for another condom.

You guessed it.  It took nearly six months of fucking her about once a week before I got her pregnant.  I gathered that the moment she realized that she had missed her period she managed to get Austin to fuck her several times, also bare back.  Then at a family get together she announced that she was pregnant.  The look on Austin’s face was to die for.  He had no idea, and he was also hearing the news for the first time.  He pretended to be chuffed to bits, but I knew he was fuming as he didn’t want kids, but here he was about to have one and not his own.

I was pleased that my business suddenly had another growth spurt.  Nowhere as long as the first one. Once it settled down again, I settled into married bliss with my wife and now three kids.  Time flew past and Andrea now had a lovely baby girl.  I heard that Austin was considering having the chop.  His daughter was now coming up for her first birthday and we were invited to our parent’s house for the birthday party.  As usual Austin was late.  Andrea asked if I would go with her to collect the present as she thought it might not go into her car boot but would definitely go into my estate car. 

We got to the shops and Andrea asked me to park at the back of the shops.  I had no sooner parked and turned the engine off when Andrea was kissing me.  We hadn’t fucked since just before the baby was born.  It was so nice slipping into her pussy again.  No condom.  I was half expecting her to tell me to pull out when I came, but she didn’t, so I came deep in her pussy.  Afterwards as we drove back to my parent’s house Andrea joked that she would have to sabotage some of Austin’s condoms.

I later learnt that she stabbed each one several times with a fine needle.  The condoms split quite quickly and within a month or so, Andrea was pregnant again.  This time there was a chance that it was Austin’s and not mine.  Nine months on Austin now had a girl and a boy.  He also went for that chop, so no more shagging Andrea without condoms for me.

I’m not sure if it was becoming a family man or what but Austin lost some of his competitive streak and has settled into being quite a good dad.  He also seemed to have given up shagging anything he could get his hands on, including my wife!  I even started to meet up with him for drinks occasionally at a local pub.  Obviously, he wasn’t completely over shagging around as during the conversation he mentioned wife swapping.  He very casually said that he wouldn’t mind and hour or two with my Betty.  I didn’t let on that I knew that not only had he fucked her lots of time but was probably the father of our last child.

I pointed out to Austin that Andrea was, and still is a complete stunner and why would he want to screw my wife.  He replied that it would be a challenge.  I left it at that.  That evening in bed I told Betty about the conversation.  She just asked would I like to screw Andrea.  I told her of course I would, what red blooded man wouldn’t fancy and hour or two with such a beautiful woman.  Betty said, “Do it then.”

Little did she know that I had already fucked Andrea lots of times, and one, perhaps both of her children were in fact mine.   A little over two weeks later we swapped.  I was told by Austin that I would have to have condoms as Andrea cannot take birth control pills.  Betty was on the pill, and besides which Austin had now had the snip so there was no chance that Betty could get pregnant.  The condoms lasted the first two or three swaps and then we did it without one.  I was supposed to pull out.  It was a mixture of excitement and being caught up in the moment, but more likely one upmanship, I came hard and deep in Andrea.

Austin wasn’t happy when Andrea told him that the condom had split.  He was even less happy two months later when he was telling our parents that they were going to be grandparents again.  This time without a doubt he knew that the baby would be mine.  It was around that time that Betty was having women troubles and said that she would have to come off the pill for some while and maybe permanently.  As we didn’t want any more kids, I ended up having the snip.

That was around eight years back.  Now in complete safety, we still swap but not that often now as with growing kids the chances seem to diminish.  I have shagged Andrea outside of swapping as I am pretty sure Austin has with Betty.  None of the kids have a clue that their dads aren’t their real dad and Austin and I agree on one thing that is that they will never know.