In 2016 I had just met a new girlfriend. Amara was sexy outgoing and bubbly. She stood just 5' 3" tall and against my 6' 1" looked positively tiny. She was in perfect proportions for her height and she had this gorgeous olive coloured skin. We had been together when she told me that she had a holiday booked for two. She was meant to be taking her ex but when he cheated on her, so she dumped him and fortunately for me the holiday was already paid for. Then she dropped a bit of a bombshell when she told me that it was on an exotic island and on the site itself everyone goes naked. I wasn't sure about the naked bit. I'm no prude and not worried about showing off my bits, but everyone would be able to look at Amara's bits. Eventually she talked me around. Then she told me that there would be four other couples with us. They were all friends of Amara's. I had met two of the couples and I must say that I was beginning to look forward to this nude bit as I would be able to see Catrina in all her glory. Amara could see my eyes light up when she told me who else was going. Then she told me there was meant to be another couple, but again one of them had cheated on the other and as they are no longer a couple they decided not to go. Then Amara told me that her parents were away for the weekend and that we should catch some rays as we didn't want to turn up looking like newbies all white, not that she needed to worry as she had a head start on me with her gorgeous coloured skin. The thought of spending most of the weekend with Amara in the nude got me hard and we had to leave the pub and drive to somewhere so that I could give Amara a damn good shagging. Well Friday night I drove Amara's parents to the train station and watched them off. Then returned to Amara's house where we were quickly in bed shagging like rabbits. Amara had to tell me to slow down as we had all weekend. Next morning as we got up I was about to get dressed when Amara reminded me that we needed to catch all the sun we could. She rubbed a low factor sun tan lotion all over my body, and I do mean all over. I did the same for her and tried to ignore my erection that wouldn't go away. We had some light breakfast and then straight out on the sun loungers. Amara had set a clock to remind us to turn over every twenty minutes. Having an olive skin Amara was able to lay in the sun almost all day. My white skin was not so relenting and after two hours I had to go inside for a while to cool down. I decided on a cold shower. This had two positive effects first it cooled me down and second it got rid of the semi hard erection that I had sported nearly all morning. Then I had another hour on the loungers before Amara dragged me indoors for some lunch. While clearing away the lunch things I tried to have my way with Amara, but she rebuked me telling me that there was plenty of time for that later. Then back on the loungers. I was just dozing when the doorbell rang. Amara told me to stay there and she would see who it was. They had a door camera so she didn't have to actually go to the door. On her return I asked who it was and she told me no one for me to worry about. I still had my eyes closed as I lay on my back and as Amara got to the lounger a hand picked up my cock and then a mouth engulfed it and started to suck it back to it's full glory. It didn't take long. I lay there enjoying the gorgeous feelings with my eyes still closed. Then she turned and straddled the lounger and my head and as the sun was blotted out the heat left me, and a pussy was suddenly planted on my face. Then it struck me that firstly Amara being so short, probably wouldn't have been able to straddle the lounger like that and secondly I had pubic hair brushing my face and Amara is clean shaven. It's hard to ask who's pussy is in your face and who is sucking your cock when the fanny is rubbing itself on your face. Then the hand and mouth left me cock for a few moments and then was back. The mouth felt different somehow. I had surrendered to the situation and was greedily drinking in the pussy juices on my face. I had put both hands on the arse cheeks and confirmed that this was not Amara's arse, it was definitely bigger that Amara's arse. Then there was movement and a pussy replaced the hand on my cock and slipped effortlessly down my shaft. Again I thought that Amara was too short to be able to do that and lift herself up and down by pushing on the floor, and this pussy was definitely doing just that. There must be two girls using my body. The girl on my face suddenly came delivering some honey to my mouth, which I quickly and greedily lapped up and swallowed. Then as she got off me I could see that it was one of Amara's friends and the one still riding my cock was Catrina. I then came quickly leaving Catrina still riding a couple more thrusts to meet her own orgasm. Then she collapsed on top of me. Several minutes later when she got off I could see Amara still sunning herself on her lounger as her friends had made love to me. Catrina suggested some drinks and the four of us went in doors and as we sat at the table. As Amara poured the drinks she explained the rules. On the island there were no rules and anyone could fuck with anyone or ones they liked. But back in the UK that would end and there was no cheating. Unless both parties in a couple agreed, then sex with others was out. Amara made it clear that if I cheated on her then I was gone, no exceptions. I asked what about today. She informed me that I could treat today as if it were a day on the island. If my smile had been any wider my face would have split in two. I confirmed that meant that I could fuck with Catrina and Morgan as much as I liked. Amara confirmed that was a yes, but only for today. My cock was beginning to get hard again already. I pointed out that Morgan and Catrina were both here and what about their boyfriend and husband. Amara told me that they were aware of what was taking place and had agree to it. Well fill your boots, We were soon back out on the loungers and I had Morgan and Catrina on all fours and was moving between the two pussies fucking each for a few minutes and then the other. I came way before they would and they ended up pleasuring each other in a 69. That had me hard again and I fucked Amara watching the pair sucking each others pussies. When they had finished they both said that they had to go and after dressing they left. In bed that night Amara asked if I was ok with it. I told her that I was happy to abide by the rules. She pointed out that she would be seeing other men whilst we were there. That put a slight dampener on it as I imagined someone else fucking my girlfriend, I wasn't sure that I wanted to see that. She told me that this would be her third year going to this site and that Catrina and Joules had been there four time., Morgan and Shirley had been twice before like Amara. They were all seasoned swingers, but only on the island and when they were all in agreement to swing. The holiday was six weeks away and the nearer it got the more excited I got and the more fearful I was of seeing Amara being fucked. I told her of my fears and she tried to tell me that I could fuck any or as many other women as I wished so why shouldn't she do the same. Then she said she had an idea, she knew I had the hots for Catrina, so she rang Catrina and explained that she wanted to see if she and, Billy, her husband would like a foursome with us. The call ended and ten minutes later that phone rang and Amara told me the answer was yes and that on the following Saturday I would be involved in my first foursome swapping session at Catrina's house. I was looking forward to having my way again with Catrina, but was still worried about seeing Amara having a different man fucking her. What would you do?