This is something published on reddit which I found hot.
https://soundgasm.net/u/kingdomoftheant ... -Barcelona
This the link of the story
From kingdomoftheants
"It's happening!! I can hear her moan as I'm listing with my ear against the door of the living room
It's happening, and I'm getting so turned on listening to all the noises from the living room.
My GF and I have been trying to make this fantasy happen for almost a year. She doesn't want anyone else to know about it, so we've been taking little trips to other cities, taking an Airbnb or a hotel and going to clubs to find a willing bull. But so far, we've had no success.
We're in Barcelona for the new year, and we decided to mix things up. Instead of being transparent and open towards a potential bull, we decided to roleplay. She's Martha, and I'm Alexei, and we're Czech (this is true) and currently in Barcelona for work. We're flying back on the 31st, and we just wanted to experience the famous Barcelona nightlife before we leave.
We've been roleplaying like this all day, and it was so hot.
We went to one club, and we danced a bit but made it seem like we were not a couple. We were social with the people around us and my GF was talking to this guy who seemed into her. They even went to the bar together, but after a while, I think she lost interest. We decided to bounce to the club next door.
As soon as we entered, I went to the toilet, and when I came back, I saw her talking to this guy at the bar. She introduced me as her colleague, and he actually seemed nice and cool. I paid them a drink and told them I was gonna check out some other floor. I was so ecstatic that I started talking to some girls from Sweden, and after a few minutes, the five of us were dancing and laughing.
One girl asked me if I was alone in Barcelona, which made me remember my GF was somewhere. I told them I'll be back later and went and searched Martha. It took a while before I found them because they were kissing in a corner. I let them be and went back to my new Swedish friends.
I texted Martha that she had to let me know when she left, as promised. She didn't read my message. But after a while, they came to the floor where I was dancing with the Swedes. Martha and her guy were dancing intimately; she was grinding hard on his dick. Around 2am, she asked me if I wanted to go to the Airbnb, as we "have a plane to catch". I said sure, and she asked her guy if he wanted to join.
The three of us went outside, I ordered a cab, and we sat in the back, awkwardly looking around in silence. I told Martha in Czech to kiss him, and she did. I just sat there, next to my GF, kissing another man in the back of a cab. That was so hot, and I got so hard.
As soon as we arrived, I excused myself and said I was going to sleep, and they stayed in the living room. I sat next to the door, typing this out for the last 45 minutes while I could hear them laugh and kiss.
I forgot to keep the door open when I went to bed, so I knocked and asked if it was safe for me to come out because I had to go to the toilet. Martha said yes, and I came out, and saw her sitting on his lap on the couch. Went to the bathroom. I left the bedroom door a bit open, so as soon as they start doing more, I can watch from the first row. So excited!!!
Update: I can't see it really good from here, but from the sounds I'm hearing I think she's giving him a bj
Update 2: they're fucking!!! OMG this feels so special. If I was actually asleep, I'd have been woken up by all the sounds for sure. She's not holding it in, and so is he.
Update 3:
What a night. As soon as I heard them fucking, my legs felt like jelly. I came so hard while masturbating to this whole event. I think I also have a big voyeur kink, so that’s a nice combo.
I have great audio recording that I will share in /r/overheardsex. You can hear the the guy asking/saying he’s going to cum in her mouth, but ultimately he didn’t. The pussy was too good. She moans so hard in the audios.
I couldn't take pictures, it was pretty dark in the living room and from my secret spot the angle was bad. I only saw some movements myself.
As soon as he left I came out of the bedroom and hugged her, she hugged me back so hard and asked if I still loved her. I said after tonight even more so.
She did the whole story. The guy was Greek, lives in Barcelona and was in the club with some friends. The fact that she was flirting with another man apparently made her so wet and horny, she dropped the hint multiple times in the club that they could take it to the bathrooms, but the guy didn't get the hints. He was pretty sceptical too about me, but Martha explained I had a girlfriend back in Czechia. Watching me have fun with the Swedish girls without taking one back home made him trust this story.
Turns out the guy was a real class act. No whining about condoms, he gave her plenty of oral and he even wanted to be really quiet to not wake me up. My girl said he made her almost cum during oral, and 30 seconds after he penetrated her she came hard. His dick was comparable to mine but a bit thicker.
Then I did my story, how horny it made me to see her kiss with another man. How sexy she was as I saw her flirt and have fun with him.
Today we're going to enjoy each other and simmer in these feelings of last night. Thanks everyone for following this, and happy New year! "
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