Wife hooked up with stranger at a concert while I acted like her friend [MFM]

My wife and I go to concerts quite often and I have always had this fantasy of seeing her hooking up with a guy she meets there. Recently, I told her about this fantasy and she found it hot. In the last few concerts, she began pointing out guys she would be willing to fuck but she always chickens out.

The last concert we went to was a rock concert. We were in the general admission standing area as usual. My wife, Brenda, decided she would get drunk, as it's one of her favorite bands. She usually doesn't drink at concerts so I was surprised. By the time the co-headlining band started playing, we had made it close to the stage so the people were jumping and getting rowdy.

We were standing next to each other when I noticed the guy behind her get a little too close as we all jumped. For the next song, the crowd pushed towards the front, pushing them together. I looked back at him, his body glued to hers. We made eye contact and he smirked as he mouthed a "Sorry" and blaming the crowd behind us. I told him it was cool, that we were just friends.

Brenda looked at me surprised. The band finished their set so there was around good 30 minutes of wait time until the headlining band started. Brenda turned to see the guy who had been grinding up against her for the last half hour. They started chatting about the band and other concert experiences as we waited for the headliner. I jumped in the conversation here and there but I tried to keep my distance.

The guy seemed to be in his late 20's, he had a short full beard and long straight hair. He was taller than me and seemed to be pretty fit. Brenda was a short jean skirt and a see through mesh shirt with a bra under. Her ass looked amazing and I'm sure it felt even better. I could tell Brenda found him attractive, as she blushed when he talked to her. They started whispering to each other's ears which was a huge turn on for me. The guy, let's call him Mike, told us he would get us all drinks and disappeared into the crowd behind us.

We didn't see him for the rest of the concert. For the last song, Brenda asked to be picked up to crowdsurf. I saw her carried away by the crowd to the front of the stage as she tried to keep her legs together and skirt down, but I'm sure a lot of people were able to catch a glimpse.

Outside the venue, I looked around for her. After 15 minutes of looking around and waiting for her to text back, I found her. She was across the street, she hadn't seen me yet. Mike was hugging her from behind as they slowly walked down the street.

As they talked and laughed, I felt both jealousy and excitement. I had to keep playing my role of her friend, I had to see where things went. I crossed the street and caught up with them. Brenda pulled down her skirt as she tried to pull away from him but he pulled her into his arms and kissed her neck. She softly moaned and tried to disguise it with a laugh. She was still drunk, but she looked at me to make sure I was okay with it. I smiled back.

When we got back to our hotel, Mike and Brenda made their way to the bar as I checked us in. I asked the hotel clerk if she could change the room from a king to two queen beds. I wanted to make it seem like Brenda and I weren't sleeping together. I went up to the room to shower as I waited for Brenda and Mike to come up.

Brenda later told me that Mike suggested they get their own room but she insisted that she felt safer with me there and that nothing was going to happen that night.

I was on my phone killing time when Mike and Brenda came in. They took turns showering, starting with Mike. This gave Brenda and I time to talk. I could tell she was even more drunk now. She told me everything they had talked about and how he got a boner when she was grinding on him. She said she was really turned on and asked me what she was allowed to do that night, as she took out my cock and stroked it, as if that would change my answer. I told her she was free to do as she pleased and she replied, "well I'm gonna let him do what he pleases with me. It's up to him."

After hearing that I was ready to finish but that's when Mike got out of the shower. Brenda put my dick back in my pants and told me to get in bed and act as if I was sleeping. I obliged and waited. I heard them flirting a laughing for a bit then I heard the shower. While Brenda showered, I could hear Mike pacing quietly across the room in his underwear then lay on the other bed.

I heard Brenda step out of the bathroom and walk towards the other bed where Mike was. I was facing towards them so I opened my eyes just enough to make out what was happening. Brenda was in her bra and underwear getting in bed with Mike. He spooned her but not much else happened at first.

I was starting to drift into sleep when I heard noises coming from the other bed. Brenda and Mike seemed to be making out under the covers. I could tell he was on top of her, maybe fingering her as they kissed. I tried not to move so I would not spook them. This went on for a bit until Brenda got up from the bed and went to her purse. It was dark but there was enough light coming through the window to see she was fully nude.

She brought back a condom, got on top of Mike. She started riding him slowly, moaning quietly as she tried not to make too much noise. Mike grabbed her ass as he sucked on her small titties. I continued to watch as Mike flipped her and laid her on her stomach, facing away from me. He got on top of her and began fucking her from behind.

With both of them facing away from me, I opened my eyes fully, now able to see better in the dark. I could only see Brenda's legs sandwiched between the bed and Mike's body. His thrusts were strong, making her legs recoil and her toes curl as her moans grew louder and louder. "You're gonna wake up your friend", he told her. "It doesn't matter," she whispered back.

He flipper her and began fucking her harder and faster. Brenda's moans got out of control, she wanted me to wake up and see. "Yes baby, cum inside me." she said. Mike and Brenda both came, I could see Mike's body shake as Brenda's legs wrapped around him and her fingernails dug into his back. I was entranced, I even forgot I was supposed to be sleeping. Brenda got up from the bed and we made eye contact. "Go back to sleep." She told me in a playful tone as she walked to the bathroom. Mike was still with the condom on laying in bed. He didn't say anything but I could tell he was embarrassed.

We went to sleep and Mike was gone when we woke up the next morning.