(I had to cut and paste this as the first message was too long)
It was a very sensual and sexy experience as Brett was really well hung and my wife loved that. The not so good part of it is that each time Brett comes to visit us now, they both can't wait to do a repeat of the first encounter. The first time was a little over a year ago, and since then we've shared twice more. The problem being that I can't keep up with Brett when it comes to sex and recovery. So once we've played and I've shot my load, I'm usually done for the night. Brett on the other hand has more sexual energy than me, so he and Helen will keep going for another 2 or more rounds. We all share our king bed when he sleeps over, and last time I awoke to the sounds of my wife moaning at 3:20am with Brett fucking her for the fourth time that night.
So be careful of what you wish for. I fantasized about sharing my wife with other men, but I didn't want it to become like it has.