My 8 year affair with my stepdaughter

I am feeling sad today as I have just farewelled my 23yo stepdaughter as she leaves to go and travel the world. For 8 wonderful years, we have enjoyed a secret affair where we have managed to have sex almost every week of those 8 years and most of those weeks, every day of the week.
I loved introducing her to a swingers lifestyle, encouraging her to fuck other guys and often attending swingers parties together when my wife was away for work.
Our affair began in an odd sort of way. One day my wife came home from work early and caught our daughter fucking a boy from school. When I arrived home my wife was furious and asked me to speak with our daughter and to make it clear this was unacceptable behaviour.
Now while I dutifully did what my wife asked me to do, I was also very aroused, knowing our girl was fucking already. I had watched her blossom over the last 4 years and she had a stunning body that was only getting more desireable as she got older, with nice firm medium sized tits that often forced her nipples to poke stiffly through her tops. Her hair was naturally auburn and she had the fiery pubes to go with it as well as a beautiful pear shaped arse and willowy long legs.
So I pretended to be angry and told her off and made out I was very disappointed in her, to which her reply was that if she wasn't allowed to have sex, then she would masturbate in front of us until we became so uncomfortable, we would give in to her. This was obviously said to shock, so I shocked right back by saying, fine we could do the same in front of her. She stormed to her room in a huff and for a day or two things were a bit tense and frosty in the house. Then the weekend came around and my wife was at work and I was watching sport on the tv and my daughter walks into the lounge with some purpose and attitude and puts her laptop on the coffee table in front of her and starts playing porn while reaching into her pants and making out she was masturbating. I looked at her and asked if that was supposed to shock me, especially as I could see she really wasn't masturbating at all and suggested if she wanted to make a bigger impact she should have walked in with no pants and actually done it, then I commented that the porn she was watching looked good.
Having somewhat burst her bubble, she decided to push it to the next level and undid her pants and slid the down a little, exposing her panties and then she actually reached right down and put her hand between her legs. I laughed, which annoyed her, and said "so it's like that is it?". I said 2 can play that game and I knew who would be more embarrassed and proceeded to undo my pants and slide them to my ankles with my underpants, fully exposing myself to my daughter. I then sat back down and began stroking my cock while looking at her porn. As you can imagine this was very erotic and I immediately started getting hard and I looked at her and asked if she was ready to give in yet. I noticed she was losing a lot of the attitude, but she said not if I wasn't giving in first. Then she asked if my cock hurt when it got hard and I told her no, but it does ache and throb, at which point things turned a different way and she asked if she could touch it and feel it throbbing. In my defence, I did say that would be even more inappropriate that what had already occurred, but I of course was too excited to stop and offered up my cock to her hand.
As soon as her hand closed around my stiff shaft there was a jolt of electricity between us and she instinctively began wanking me. I asked her if she had done all the things that were going on in the porno and she said she had done some, but didn't know if she was doing things the right way and so I asked if she wanted to try things with me and I could show her what was right and wrong.
She agreed and within an hour we had covered hand jobs, blow jobs, the art of teasing a cock and even dirty talk. I was now so horny and asked her if she wanted me to help get her off and she said she didn't think she had had an orgasm yet and wanted to know what it felt like, so I began rubbing her clit, then got between her legs and started eating her delicious young pussy with it's fiery mound of fur until she began convulsing on my tongue having her very first orgasm. I seized the moment and put the head of my cock against her wet pussy lips and pressed forward, feeling her lips engulfing my head as the heat of her pussy burned into my cock in the most intense way. I then pulled back a little and then gently thrust forward again and as my entire length entered her tight wet hole, she let out a loud groan of pleasure and pain and we stayed still a moment soaking up what was happening and letting her muscles adjust and relax a little around my throbbing cock. We continued to fuck for about another hour until she said she was getting sore so I pulled out and she wanked me until I came all over her red pubes.
I told her she would now be much better at sex than most of the other girls at school and that once the boys knew, they would all be looking to fuck her and she would have her pick of guys. She asked if we would ever do it again and I said any time she wanted, but if anyone ever found out we would be in real trouble, especially me. I also said I would talk with her mother about putting her on the pill, as I already had a nervous feeling about the risk we had just taken having unprotected sex. As it transpired, there was nothing to worry about and we soon hatched a plan to have sex as often as possible.
One thing that made everything easier, was that my wife worked every Saturday, so we had that whole day alone together to fuck, although over the years we did nearly get busted a number of times, including once when we didn't hear my wife come home and she knocked on our daughters bedroom door to let her know she was home, scaring the shit out of both of us and forcing me to dive out her bedroom window and pretend to my wife I had been working down the side of the house when she came home, all with her daughters wetness still on my cock inside my pants as I talked to her. Another thing that made it easy, is that my wife suffers insomnia and takes 2 sleeping pills every night and never wakes for 8 hours, so our daughter and myself were able to do pretty much anything we wanted during that time and on a number of occassions we even had sex right on the bed next to my sleeping wife.
Over the years our daughter had many guys, none of them serious, and she enjoyed getting into the kinkier side of life with me, fucking 2 of my very best friends, one of them in a 3some with me as well as enjoying a few gangbangs. We even went on a trip together after she won a prize and enjoyed fucking on our hotel balcony for all to see as well as her enjoying bringing a string of older guys, including one in his 70's, up to our room for good hard fucking.
We recorded ourselves several times and enjoyed watching our home porn while we fucked. We also enjoyed going on cam together and watching guys blow their load once they knew she was my stepdaughter. The best of these cam performances was one night when we entertained a room full of college guys in the states by showing my wife in bed asleep and fucking right next to her for them.
So now, she has flown away and will be staying with my good friend in the UK, who has already sampled her delicious pussy and she will be sampling cocks all around the world.
For us it, may be the end of our affair, or it may just be a break, we have not decided and have discussed the possibility of me getting her pregnant in the future, but I guess that will be dependant on whether she meets someone she wants to settle down with.
I will miss the amazing, kinky, risky sex, but thank god for web cams!!