Feeling a tad inferior

My wife and I have been friends with another couple for two years. We're all in our late 30s. My wife works with the wife Carolyn. She is married to Mark. They are nice people and we get together at each other's places for dinner, drinks, and the occasional outing maybe once every couple of months.

Nothing sexual has ever happened between us until last week. We were at their place and they had their kids at grandma's, so it was just the four of us adults. We were drinking quite a bit and Carolyn let it slip that they thought my wife and I were attractive. My wife commented back that she thought they looked good too. And she was right. Mark is a handsome guy; he's very fit and has sandy blonde hair, blue eyes, and a nice tan. He looks better than me. I could see why my wife fancied him. His wife Carolyn is pretty too, though I think my wife looks better. Carolyn is very tall--maybe 6'2"-- with legs that go on forever. Pretty woman.

I'm not going to get into the lead up, but we talked about having a swap in the living room while we were watching a game. The girls were down for it, and so was Mark. I had some trepidation, as we had never done that with anyone before, but the opportunity to fuck Carolyn was getting me turned on, so I said I was in. I'd always thought she was pretty.

I did fuck Carolyn and she was good. Her hands and bodily response were such a different experience than being with my wife that it was a bit of a treat. Her pussy was lovely. She wasn't as tight as my wife, but very nice. She was a sexy lover. I wasn't complaining. We had sex for maybe 15 minutes in a few different positions and got each other off. It was a lot of fun.

It was seeing my wife get fucked a few feet away that took me aback. From the moment Mark took off his pants, I could tell that he was much, much bigger than me, and I'm average size at about 6". He had a tool. He was already hard thinking about my wife even as he stripped down. Even my wife looked at him and said, "Oh my, look at you." He was as thick as a soda can and longer than me. My wife undressed and Mark was drooling over her. He said, "Look at that gorgeous pussy. Bring that thing over, baby." She did.

He had a look of pure lust in his eyes that looked like he was getting pussy for the first time. He wanted my wife badly. It was the kind of excited look that made me think he had wanted to fuck my wife for the whole two years we'd known one another. Now he was getting his chance.

They started fucking in missionary and when Mark initially penetrated my wife, she simply said, "Oh fuck, you feel REALLY good." I don't recall her ever saying that to me ever. I was busy fucking Carolyn, but I could tell that Mark and my wife were having an electric experience. My wife made sounds that I rarely ever heard. She was getting her brains fucked out.

Carolyn and I had long finished and Mark and my wife were still going at it. He had already cum once but was hard again in less than two minutes and flipped her over and said, "Oh, there is no way I'm done fucking this pussy yet, no way" and pounded her again. He was totally hot for my wife. It was almost unnerving.

I had a good time. I really did. But Mark was a total fucking animal on my wife and had her trembling and shaking throughout their whole session, which seemed to last forever. I couldn't believe his stamina. I felt like I was a bit lesser in the sex department than him. He unloaded in her pussy as she came yet again and they collapsed in exhaustion.

We went home later and I asked my wife about how she liked Mark. She just said, "OMG, he was amazing. But don't worry, I love you and you are great too." I certainly didn't feel like it, because I watched what happened. My wife said not to compare, because that's stupid.

For guys who have been in a same room swap, did you ever feel like you were competing with the other guy? I kinda did, although that was an unexpected emotion.