My GF was keen to visit a swingers club. We were travelling to San Jose (Costa Rica) and found a promising club on the internet. We registered and went around midnight on our first evening there. My GF put on sexy lingerie I had bought her in Europe. She made a point that she wanted to wear it to attract other men while I was watching.

We agreed that we would try to stay together, that she could seduce anyone she wanted, but that I was not allowed to approach another woman. She could have sex, but not kissing. I could only have sex with her, if at all.

We arrived at the house and were welcomed by the hosts, a sexy lady with big breasts and her husband, a strong attractive man. G, my GF, was impressed with the boobs of the lady and when they started chatting, she asked whether she could touch them. Of course she was allowed to (and of course I wasn't). The hosts put music to break the ice for the several couples who were there.

For a while, it looked like most couples were in the club just to have sex in public, but not to swap partners. G was a bit disappointed as she wanted to have one or two other men for her pleasure.

She danced with the lady, fingering her boobs and after a while, she found a male dancing partner. I watched them with trepidation. The man's hands were exploring G's lingerie-clad body, especially her cute naked ass. His partner was also watching them but then started chatting with the hostess at the bar.

G and her dance partner took advantage to move to one of the bedrooms. I followed them but wasn't allowed inside. I watched from the open door, though with lights off, I could not see much. G came out about ten minutes later. I asked her how it had been. She explained that the guy had indeed fucked her but that his cock was small and that he had not lasted long. Still it had been thrilling to do it with a stranger, while I was outside. She was eager for more and declared she actually fancied the handsome host.

She went to talk to him, but he said he could not engage with clients, pointing at his wife who was observing them. G told him that she really regretted that rule, because she found him sexy and would have loved to have him fuck her in my presence.

A bit later the host accompanied his wife to their home, actually a smaller house in the same compound just opposite. I stayed with G and we talked about how sad it was that there seemed to be no chance for her to get a guy to have sex with. Not because the guys were not interested, it was obvious that she was by far the sexiest girl there. Just that (just like herself) their wives were too jealous to let them be with her.

Then we saw the host coming back to the clubhouse. She smiled expectingly and said, "Maybe I'll be lucky after all! He is such a sexy man, I want him."

I reminded her of the no-kissing rule in case he was really coming back for her. She told me not to worry.

And he was heading straight for her. His wife had gone to sleep with a headache, but he wanted G, so he snuck out to have sex with her. G was visibly happy as he escorted her to a nice bedroom. There was a place for me, a sofa, to watch them as G lay down on the bed in her sexy lingerie. The host undressed. He took off his shirt, unveiling a broad, hairy chest, then removed his pants. He had a visible bulge in his briefs that G touched with a happy smile. She turned her head towards me with a naughty expression and then removed the man's underwear.

His cock literally jumped out of his briefs. It was stiff, pointing upwards, and thick. G gasped with pleasure and took it into her mouth.

The scene was exciting - my own penis was rock hard and I also removed my underwear to strike it slowly.

G gave the guy a blowjob...I knew from experience how great he must feel. After a few minutes, he pulled his stiff member out of her mouth and buried his head between her thighs. G was moaning with pleasure from the oral sex and was cumming quickly.

He moved his head upwards, kissing her breasts. His erect penis touched her thighs. G pulled his head up and kissed him. She broke the only rule we had agreed. Deliberately, as she glanced back at me naughtily and continued kissing him.

I was a bit annoyed but at the same time excited by the steamy scene. I sat on the sofa, my cock erect, watching their erotic intimacy. My petite G clearly enjoyed the embrace of the muscular, hairy bull with his thick cock who was about to cuck me. Two couples were watching in the doorstep as the host shoved his hard member into G's willing pussy.

G moaned as he entered her slowly at first. She squeaked as he started taking her with strong, rapid thrusts. He had stamina and pumped her vigorously. She lost all bearings and moved her hips up and down, moaning loudly. I knew she was cumming again. He knew it, too.

As her orgasm ebbed, he pulled out, turned her around and prepared to take her from behind. He knelt behind her, his shaft, glistening from G's love juices, pointing at her pussy, his big balls hanging heavily between his thick hairy thighs. His virility was maddeningly obvious. My own cock is big, but I couldn't help being impressed by the massive manliness that had clearly been what G had realised well before me. No wonder she had wanted him, the perfect bull.

G was looking at me, her face beaming from the orgasm and looking forward to the next one as his big cock entered her dripping pussy from behind.

I was looking back, smiling sheepishly as I watched, my stiff penis in my hand, how the bull's thick member penetrated G.

Now he was in his element, dominating G with his massive body and cock. The couples in the doorstep watched, visibly excited just as I was, as the bull was pounding G powerfully. G screamed with pleasure, mixing with his heavy breathing. I thought I could hear the sound of his massive balls slap her inner thighs.

I saw her face contracting in a second orgasm. I heard a roar and looked at the bull pumping his semen into his female, triumphantly looking back at the masturbating cuckold.

They stayed a while on the bed, until the guy got dressed and took his leave to return to his wife. The couples had also left.

I lay down next to G and asked her about the forbidden kiss. She explained that it had seemed natural and I shouldn't bother. I said it was ok and everything had in fact been really exciting. I had not cum yet and was eager to.

"My pussy is a bit sore and I had enough cock for tonight; let me give you a blowjob."

G took my eager cock into her mouth and quickly sucked me to the finish. She was teasing me:

"Huh, that was a big load! You seem to have enjoyed the scene."

We laughed and got dressed to drive home in the early morning hours.