We often talked about having a second guy in our bed with us, we would even bring it up as dirty talk during love making. I'd often go home for lunch during work and some times we would have a quick one before id go back to work. Occasionally my work mate would come home with me, my partner and I had entertained the idea of him watching us and maybe joining in. On the way home for lunch I asked him if would be interested in watching us, he said wasn't sure and seemed a bit embarrassed. I said to him that we would go into our bedroom and start fucking and that he could come in if wanted. My partner and I went into the bedroom I started to fuck her from behind, couple of minutes went by when I saw the door slowly open and he walked in. I could see his hard cock through his pants "that and he kept rubbing him self" so I asked if he would like a turn. As he pulled his out of his pants I pulled mine out of my wife, he slid it up and down her slit a couple of times before he pushed his hole shaft inside of her dripping wet pussy. I heard her gasp as he filled her up with his cock, watching his cock go in and out of my wife and her pushing back on his hard on turned me on so much it gave me such a ragging hard on. As I was watching him, I saw him thrust it hard and he held it there holding her hips and her pushing hard back into him as he filled her up with his cum. As he pulled out of my girl his come leaking out of her pussy I rubbed my cock in it and started fucking her now dripping wet, cum filled pussy. Just the thought of fucking her after some one else had already filled her up got me off so much that I soon filled her up as well. We've done it quite a few times after that, each time getting more and more adventurous and more comfortable around each other. It's really boosted my partners confidence in her self and sex drive, and now were on this web site trying to find other people to have some naughty fun with.