I let my wife be used

I couldn't tell anyone for all these years but I have to tell somebody so I'm going to tell you.
A band that my wife really liked was going to play nearby and the day they were to play just so happened to be her birthday, her 40th. They were playing on the second day of a big music festival so I got 2 tickets for the 3 days of the festival and said that we'd try the glamping tents because all the hotels were booked out. My wife loved the present.
We arrived Friday evening, unloaded everything and then strolled around the site listening to some music and sipping a few beers and wine. The second day was hot, so hot. We headed back to the park found some shade under a tree at one of the stages and stayed there for most of the afternoon. The music was good the drink was flowing and the 2 of us were in great spirits. I didn't realize how much drink we had until we were about to head back to the tent and saw all the plastic cups we had stacked beside us. I kept to the beers but the wife first drank some wine then many different cocktails and even downed a couple of shots. She kept saying this is for her birthday.
We headed back to freshen up and change before her favorite band started. Of course it took her longer than I expected to get ready and then a big rush to get there. The wife had on a nice mini sundress with straps over her shoulders with no bra under the dress, she was really looking **. As we were rushing to the gig I could see her ** through the sundress, something she doesn't like, so I told her. She wasn't very happy with me saying " you waited untill now to tell me". I thought we would head back to the tent so she could change her ** but she looked to see if anyone was around and took them off and told me to mind them.
The concert was on when we got there and there was a huge crowd. My wife who isn't tall ( 5' 2") was having trouble seeing the band so she told me to follow her and so I did. It took her a few songs to barge her way up nearer the stage but she did, just left of center not at the stage but back maybe 50 people. i positioned myself behind my wife and we settled in and soon were jumping and swaying to the music. The wife was really giving me a good grinding with her ** and I had my hands all over her getting a ** of her ** and her **. The croud around us didn't seem to take any notice as they were getting rowdier ( not in a bad way). The wife was getting braver ( must have been the drink and atmosphere) because the grinding I was getting turned into groping. She was reaching back and grabbing a hand full of my ** and **, through my shorts. The next thing a wave go people would happen knocking us and we might drift to the right or other times to the left. She'd look back to see if I was still behind her and then get right back to the fondling. This happened about 6 times with her looking back but soon there was no looking back only getting straight back to grinding and feeling. I was getting really turned on, a hand full of her **, rubbing her thighs and just getting a good feel. She was really getting ** now because the next thing I feel was her hand going up my shorts and pulling out my ** ( I knew what she wanted) but to my horror the band was thanking everyone for being a great audience, they were finished. The crowd were screaming for more, so was I but for a different reason. The screams continued for about 3 minutes then that screaming turned into cheers as the band came back for an encore and played their most popular songs and with that my wife also continued where she left off. She started to grind again and I was feeling her up when another wave came but this time it was more like a "riptide" where she went to the left and I went to the right and back a step. She was only over one person but as I started to work my way back I see her starting to get her ** grinding on "a stranger" someone else..... I stopped...... I was enjoying what I was seeing, my wife grinding on someone else's **. The next thing I see her hand going up the shorts of this fellow. He was looking down and around in disbelief. I see her hand pulling his hard ** out and pulling it even closer to her. Next thing I see her knees starting to spread and bend slightly, reaching back between her legs and grabbing his ** pulling it towards her under her sundress. I was thinking I can't let her do this, it's definitely not her, but I really was getting turned on watching this happen. I can see her back arching, her ** rising up slightly and her neck stretching up. I knew what was about to happen and with a trust from this stranger's hips it did. She placed one hand on the shoulder and the other on the back of 2 people in front of her for support, they took no notice at all of her and looking around no one else did . A wave would come and separate them just to have my wife grab his ** and glide it back into her. He was getting braver, his hands were now all over my wife's body, one hand was inside the side of her dress squeezing her small ** and the other hand was sliding up her thigh and under her dress. Another wave came separating them but this time he was the one in control taking his **, giving it a huge thrust back into her and with that I could see my wife's legs start to quiver. I knew what that meant because I've seen that happen many times before. His hand was back inside her dress squeezing her ** but this time by reaching for the second ** he was exposing her near one. I could see her small, tan lined, pail ** and nibbin sticking out of her dress. The next thing I see is the stranger moving his hips ( and **) from the pumping action to giving it a huge thrust leaving it there, another big thrust, and another. I knew what just happened (he was filling her with his **). He gave her a couple mure pumps of his ** before pulling himself out and tucking his ** back up his shorts. Almost at the same time the band finished, for good this time. He looks around then goes back to his friends like nothing happened, They were still bouncing around knocking into each other but drifting towards one of the exits.
I made my way back to my wife, with the biggest ** in my shorts, waiting to see her reaction. She had the biggest smile on her face as she turned to me, giving a huge hug (she was buzzing). On the walk back to the tent she was on about how great the band were, how the atmosphere was electric and whispered into my ear how great the ** was. She kept saying that she couldn't believe we did it there. She also said to me that I must have really loved it as well because she couldn't believe how much ** I shot into her and that she is soaked with ** running down the inside of her thighs even dripping into her shoes. She glazed her hand off me and felt my throbbing ** and said to me "it looks like someone is ready for round 2".
The very second we got back to the tent I took off my shorts, lifted her dress up and started pushing my ** onto her. The ** was still juiced up from the strangers ** and her excitement. I could feel the stickiness between her thighs from his ** and my ** was sliding between her ** lips with ease. After a few pumps into her I pulled my ** out and placed it towards her face where I could see how wet the head was after being in her **. She took my ** into her mouth and started to work it licking it and sucking it, All I was imagining was his **, on my **, in my wife's mouth. The thought of that really turned me on, I was taking her from every angle. I could feel, and at different times and see, her legs quivering along with the high pitched squealing knowing she was climaxing. With her squeals of pleasure and seeing her hole body violently shaking with her eyes rolling in her head (that was something new for her), I shot my load into her. I eventually pulled out after ramming my now empty ** into her a few more times to see the biggest load of ** dripping out of her **. I just thought that had to be a mixture of his and my **. She said she had never had a climax as intense as the one she just had. She kept saying what a great night she had and I have to be the best husband anyone could have (if she knew what happened would she be saying that???).
At times, throughout the years, i feel so guilty of what I left happen to her but the most of the past 8 years I get so turned on by it. She's still telling friends about the best birthday present she ever got was the glamping weekend for her 40th birthday.
I kept this to myself for too long and it feels good to let someone know what happened that magical weekend away, 8 years ago.
I hope you enjoyed this read