Sorry only just seen replies, I'll answer them as honestly as I can
We meet in a hotel in Liverpool, the girl was from a well known agency - she was very nice and we were nervous, we had had a few drinks before hand as well, not drunk by any means just to calm the nerves. We chatted for about 40 minutes, our choice not the wg, we went back to the room and it was for me a bit surreal to be honest, it wasn't awkward or anything but it was very different. The wife and the wg got to know each other
and I watched, it all got a bit heated and I wasn't watching anymore, the wife was happy to watch me with her but I didn't want too....the whole thing for me was to watch her with the girl. It ended with me fucking the wife doggy style while she fingered and kissed the wg. Would we do it again, yes we probably would it was an amazing night and I have an amazing wife
As for approaching the subject - we had discussed fantasies a long time ago, she knew what I would like and I knew what she would like, they just happened to match however at the time she thought it was better they stay fantasies. I'd asked her several times since whether she wanted to explore the fantasies but the answer was always no, then once when we were watching porn together, not something we do all the time by the way I asked her and she said ok, lets try it and that was it. I guess you have to feel pretty secure and happy with each other to go down this road, neither of us considered it cheating, there was no jealousy and apart from the long talk the day after when spoke about how we felt about it and what we did (and the great shag that followed) we haven't mentioned it. I'm sure it will come up again and it's highly likely we will try it again but it doesn't get in the way of our life and I have no interest in seeing a wg on my own.