I was fucking my girlfriend the other day, something we do a lot on a regular basis, when we realized that her roommate was listening at the door to the noises we were making while screwing. At first we were a little put off by it, but then we both came to the conclusion that it was kinda a turn on having her hear us do it. We continued the game for a while, till one day when I wasn’t there my girlfriend saw her roommate looking on the Adult Friend Finder dating service at the couples who were looking for a female to join them. She asked her if she was interested in doing that and she said she was but she was just too shy to ever reply to an ad. Well one thing led to another and the next time I was happily humping my girlfriend her roommate came into the bedroom while we were doing it. I didn’t’ say anything, of course I was hoping I was going to be able to fuck both of them but I knew if I said something I could fuck it up so I just kept my fool mouth shut. It's very touchy to mention another woman sexually when screwing on's girlfreind and I'm not an idiot. She came over, stripped out of her cloths, and touched and hugged us while we continued to fuck. I could tell she was already wet and ready from listening to us for soo long and I held out as long as I could before desire just took over me and I grabbed her and fucked her in front of my babe. It was a big risk, but I didn’t care at that point. Thank God they were both ok with it. It ended up being a very hot evening as I fucked one and then the other. Finally I blew a load all over the two of them and then we all talked about how much fun we had just had! Later we all made a pact that we would each try a sexual encounter with a stranger from that dating service to spice up our sex lives since this encounter was soo much fun. My girlfriend and I are meeting a cute little blonde next week for some x-rated fun! I hope she’ll be ½ as into it as my girlfriend’s roommate was.