Las Vegas Changed My Wife Forever

We were all hanging at a party at The Venetian Hotel in Las Vegas. The atmosphere was low key. Everyone was dressed smartly but casually. The conversation was about the problems this one couple was having with their sexuality. I was kind of surprised by the conversation and a little turned on.
Before I really realized what was going on, the conversation meandered to a discussion of how we were in Vegas and should all relax and enjoy ourselves more. Then all of a sudden while we were sitting around in their executive suite this guy pulled his cock out and his wife starts sucking on it. It was long, large, rock hard and pretty impressive. I couldn't believe it. I mean I'm not used to this kind of openness and sexual display, even in Las Vegas. I was in shock. I looked over at my wife and was surprised to see her smiling and looking happy. The next thing I realize is that this guy pulls his cock out of his wife's mouth and starts walking around. To my utter amazement my wife grabs his cock and sucks on it once as if trying it out. I was amazed and in shock. I found myself somewhat aroused, but emotionally confused. She had totally surprised me. She seemed to enjoy sucking another man's cock and was more relaxed than I had ever seen her.The guy continued to walk around the room showing off his monstrous cock when again he came close to my wife and again she grabbed his cock and started to suck it. She took it deep inside her throat swallowing the whole shaft and taking her glistening tongue and running up and down his smooth shaft. I had gotten up from my seat and was starting to say something when he quickly blew his whole load and she swallowed it all smiling and looking besides herself. She looked so happy and satisfied and I found myself strangely turned on and disturbed by the whole thing. The next thing that happened to my total amazement was my wife lifted her skirt and lied back on the carpet. Before I could say anything the guy had pushed her panties to the side and rammed his huge cock inside her, her juices squirting everywhere as she let his giant cock slip into her easily. She moaned intensely and smiled gleefully. I couldn't believe what was happening. My mouth was agape as he pounded his hard cock deep inside her putting her legs over his shoulders. She screamed a deep intense moan and yelled "yes yes yes fuck me harder you're so fucking good." The whole group of people were all looking at them fucking and enjoying it, glancing at me wondering what I was going to do. Before I knew it she yelled again in what seemed a terrific orgasm screaming at the top of her lungs, "oh you're fucking amazing oh I'm going to cum, I'm cumming, oh yessssss." She squirted all over the place as he pulled out of her his cum shooting all over her body and into her mouth as she greedily swallowed the last of his second huge load.

They say, "what happens in Vegas stays in Vegas", but we did take this home with us. They should say, "what happens the rest of your life starts in Vegas"! My wife has continued to enjoy public fucking at parties and I have continued to just watch with my mouth shut.