It was the Easter holidays and for a break from our usual routine, Catherine and I had rented a cottage with its own garden and pool on the South Coast for two weeks. We particularly chose this cottage as the photo in the brochure made it look very secluded and Catherine likes to sunbathe naked in the garden, which I rather enjoy and encourage, not only being able to look at her but also being able to admire her all-over tan afterwards. However, whilst the cottage was secluded, it turned out that the owner, a very good looking guy called Andy, lived right next door and seemed to be always popping round unexpectedly, to check we were alright. I teased Catherine and said that Andy was just using that as an excuse to try to catch her sunbathing in the nude. But even as I said it, I detected a certain look on her face. She said nothing, but she just raised her eyebrows and my cock began to stir. "Maybe she fancies him and likes the idea of him seeing her naked", I thought. Catherine not only enjoys sunbathing naked in the garden, but also sometimes does the housework in the nude too. I have no objection to anybody else seeing her naked body as she has got a good figure and it turns me on when other people admire her body. The thought that the guy next door might turn up at any time and catch us both naked and maybe even making love in the garden was quite exciting and made us both quite aroused. One afternoon, after we had been at the cottage a couple of days, I was in the kitchen opening another bottle of champagne when I heard Andy arrive again. Catherine as usual was sunbathing naked in the garden, so I quickly hurried back outside to see what was happening. I deliberately stood where Catherine and I could see each other but Andy had his back to me. I found Andy happily chatting to her as if she was fully clothed, but, understandably, I could sense that his eyes were roaming all over her body. Catherine, in turn, was lying on a towel on the lawn, supporting herself on her elbows. Her knees were bent and her legs slightly apart and she had made no attempt to cover herself with the towel. Despite being totally naked she seemed very much at ease as she chatted away to Andy who was sitting very close to her on the grass. It was quite exciting hearing and watching Andy chatting her up. He said it was delightful to see her looking so relaxed and hoped the weather would be good enough to allow her to sunbathe naked for the rest of the holiday. Then he commented that it must be lovely for the two of us to be naked in the garden and make love in the open air. “I must say you have a very nice figure” said Andy. Catherine blushed, and he then placed his hand on her knee and gently pushed it sideways. Probably because of the effect of the champagne, she just giggled as he pushed her leg further sideways and she did not seem to mind as he gazed between her opening thighs. “You are being very naughty” Catherine said to him. “I’m going to be a lot naughtier” he replied. I stood there, trying not to breathe too heavily, or say anything, in case I broke their mood. Andy then moved both his hands between Catherine’s bare thighs and she put up no resistance as he eased her legs wide open, exposing her gorgeous pussy to his gaze. She glanced at me as he manoeuvred himself between her legs. “What are you doing” she asked him, but Andy ignored her question as he lowered his head down between her thighs. Catherine looked at me again and held my gaze. Then her lips pouted in obvious pleasure and she ran her tongue over them sensuously at me as she laid back and surrendered the most intimate part of her body to his attention. She was really getting aroused allowing this young man to lick and suck her out in front of me. Andy reduced Catherine to a quivering mass within a couple of minutes. She was shaking with excitement as his tongue teased her clit and ran up and down and in and out of her love passage until she could resist no longer and came uncontrollably. Catherine’s breasts had now become swollen and her nipples were dark and erect and I could tell it would not be long before she needed a cock inside her. The way Andy had aroused her, I realised it was too late to stop what was obviously going to happen. Andy then stood up and removed his shorts. He had an amazing hard-on. Catherine looked at me again, probably to judge my reaction, as she also knew what was going to happen, but I could not respond. My heart was pounding and my cock was erect and throbbing as I was so excited watching what was going on. She knows that it turns me on big time when she flirts and acts like a tart. She gives me that look, which from previous occasions, I have got to know. However something told me that this time she was going to act like a tart more than she’d ever done before. Andy got down on Catherine and I watched in total bewilderment as she laid still with her legs still open as he edged the head of his cock into my girlfriend’s wet pussy and then started to fuck her. She turned to look and smiled at me. It was obvious that not only was she enjoying what Andy was doing to her, but she was also enjoying me watching her while she was being fucked. It was almost as if she was saying to me, “Look at me, I’m enjoying this”. Eventually Catherine looked away from me and started panting with lust and urging Andy to fuck her harder, which he did until she shuttered and screamed out as she reached yet another climax. She was laying on the grass, writhing in ecstasy as Andy carried on thrusting in and out of her, eventually moaning out loud as he pumped his warmth into her. A few seconds later Andy smiled as he climbed off my girlfriend. “I’ll see you tomorrow and hopefully we can do that again” he said, and with that he picked up his shorts and disappeared through the bushes back to his cottage next door. “Well, I must say that was good”, Catherine said to me, “and now I want you too”. I could not waste my stonking hard-on I had from watching what had just happened, so I too then got down on Catherine, I slid my cock into her now soaking wet pussy and I fucked her as hard as I could. We both then had the wonderful experience of having our orgasms at the same time in each others arms. After we had rested a while, Catherine told me that she had really enjoyed having both Andy and me and that she wanted to have us both again. And so it happened that, as expected, Andy came to visit us again the next day and several more times during our stay at the cottage. So not only did Catherine have the enjoyment of sunbathing naked in the garden every day, but also the pleasure of both me and Andy fucking her every day for the rest of her holiday. Later Andy told us that, over the long weekend later in the year he has got two other couples staying with him in his house and he would very much like to introduce us to them, as he thinks we would all get on very well, so he has invited us to stay in the cottage at the same time. I have enjoyed this weekend and Catherine certainly has enjoyed it, and from what Andy has implied, this next weekend sounds as if it could be a really interesting and enjoyable time for everyone !. When we went to bed later that night, we both got very aroused fantasising about what pleasures we both might expect over that weekend. “So, do you think we should go that weekend”, I asked Catherine. She looked at me and smiled,“Yes, I think we should”, she replied, "Definitely", she added.