When we woke the following morning after our night of sex with our new friends, Bill and Sue, we lay facing each other, not saying a lot initially. I am tempted to call it a night of debauchery, but it had all happened so naturally, so clearly it was what we both wanted, and perhaps had yearned for.

We started talking about our experiences – Di said that Bill is a big guy, and the first time he had fucked her, she had felt crushed beneath him, something she had never experienced with me, and it felt good to be dominated. I didn't say too much about my experience with Sue, as I wasn't too sure about Di's reaction to me being with another woman, but I shouldn't have worried as she was on a high recounting what she had done with Bill.

Later on that morning, Bill and Sue knocked on our door, to see if we were still happy about what had happened the previous night, and Di asked when the next time might be, with a slightly nervous /excited tone in her voice – to which we all laughed.

Bill reminded us that they were due to attend a swingers party at a large house about 10 miles away on the Saturday evening. He said he had phoned the hosts to tell them about the lovely couple they had met at the campsite, and they had agreed to extend the invitation to us, if we wanted to go. Di and I looked at each other to judge the other's reaction, and Di broke the silence with a very positive 'yes please'.

We had not brought any party clothes with us in the caravan, so it was arranged that we would all go to a nearby town on the Friday to do some shopping. The ladies wanted to go off on their own , so Bill and I shopped around for some smart/casual wear for me, which didn't take to long, so we ended going to the pub for a pint. Unlike Di's normal shopping trips, she was reluctant to show me her purchases when we got back to the caravan, saying I would have to wait until Saturday evening.

Saturday evening came around and, after having showers, Di disappeared into the bedroom in our caravan to prepare herself. When she came out, she looked stunning! Her new party frock was a little black dress, with red trimmings round the neck, which was short enough to show occasional glimpses of stocking tops when she sat down. I wanted to fuck her there and then, but she told me I would make a mess of her make-up so I was to behave myself.

We travelled to the party in Bill's car, Sue sitting in the front with him, Di and me in the back.

On the way there, Bill said he would brief us on the etiquette for parties. He said there were expected to be about 10 couples there, so maybe 11 including us. There would also be 10 – 12 single guys, so possibly 2 guys to each lady, ensuring that 'greedy girls' were well catered for. I had assumed that Di and I would play with Bill and Sue again, possibly another couple if we met people we clicked with, and the suggestion that Di might be ravaged by a group of horny young men made me start to feel uneasy. However, Bill calmed my nerves by saying that, if a lady says no it means no – they are in charge – and we men should only touch what we have been invited to touch.

Bill said there would be lots of people there who we had not met before, so Sue and Di had bought condoms when they were out shopping. Di produced a box of 12 from her handbag and, after a little negotiation, gave me 4 to put in my pocket. Bill said they would show us round the house when we got there and, hey presto, we were turning into the driveway.

It was a big detached house, standing in its own grounds, so not overlooked and, I would imagine, ideal for private parties. We were met at the door by the lady of the house, a voluptuous mid-60's lady called Tanya in a very smart cocktail dress, who clearly liked to show off her assets, as her bust was literally fighting to get out of the dress. Having been introduced to her, and her husband, Nigel, a skinny little guy who looked like he could easily become lost in his wife's cleavage, Bill suggested that he and Sue would show us round.

It was clearly a very large house, with 3 reception rooms, in addition to the large live-in kitchen and a hot-tub on the patio round the back. The stairway led from the hall in a big arc to the first floor, where there were at least 5 bedrooms, all with double beds and their own en-suite. I noticed each bedroom had a generous supply of condoms and bottles of lube on the bedside tables.

As we came back down the stairs, Bill said that, before midnight, any sexual contact downstairs should be limited to discrete petting,but after midnight, anyone who was still there would not be offended by whatever went on. All 4 of us went into the kitchen to get drinks and, when we came out, Sue suggested that she take Di to the far side of the room to meet some interesting people. As they walked away, Bill volunteered that his wife is bi, and she was keen to get Di on her own so they could explore each other.

Bill took me round to meet the other guests, most of whom he seemed to know well. The couples were a mixture of ages, from early-40's through to late-60's, the single guys stood out as they were clearly a lot younger, maybe 20's and 30's. One couple that particularly stood out for me was Steve and Katie, due to their relative youth, they looked as though they were barely into their 30's. Bill had not met them before, so he was keen to chat and get to know them too.

Katie was utterly gorgeous, slightly shorter than me, slim with beautiful facial features, and a lovely, slightly nervous, smile. They said that this was their first party, so they were not very experienced. Katie said they had not expected there to be so many single guys there, which she found a bit intimidating.

Di and Sue were at the far side of the room chatting to some other people, and I was trying to keep an eye on them, whilst concentrating on the conversation I was in. As time went by, I noticed a distinct change in Katie's body language, she had stepped slightly closer to me and would touch my chest occasionally with her hand.

Bill made eye contact with me briefly and drew my attention to Di and Sue, who were walking towards the staircase, and I was pretty sure that 2 single guys who had ben chatting to them earlier were following them. I didn't want to lose the connection that was developing to the lovely Katie, so I simply nodded to Bill, and refocused by attention on her lovely smile.

After a while, Bill made an excuse that he wanted to speak to some more old friends and he moved away, leaving me chatting to Steve and Katie. It wasn't too long before they must have exchanged some sort of code word, as Steve leaned towards me and quietly said that Katie wanted us to take her upstairs. They proceeded hand in hand towards the staircase, with me the other side of Katie and, when we neared the top, she grasped my hand slightly nervously.

As we walked down the corridor, I could hear a lady orgasming loudly, which I thought sounded a bit like Sue's voice, but the focus for all three of us was very much on finding an empty room, which we did at the end of the corridor. Steve locked the door behind us, Katie stepped straight up to me and seemed to be offering her soft lips to be, so I gently kissed her, without too much passion as I knew she was nervous.

Steve stepped behind his wife to unzip her dress, and push it forward off her shoulders, which she allowed to drop to the floor. I put my arms around her to kiss her more assertively and her lips melted into mine, our embrace becoming more passionate.

Steve started to direct what he thought Katie should do to undo my belt etc, but she admonished him, saying she would take this at her pace. However, she very quickly had my trousers and pants around my knees, and was admiring my cock, with a lustful look on her face. Steve was inclined to start directing again, but she silenced him with a sideways glance. She knelt down in front of me to lick my full length and it wasn't too long before I was fully erect.

Katie certainly had some good oral skills and it wasn't too long before I had to stop her to avoid making a mess all over her face. I lifted her up and guided her back onto the bed, pulling her thong down in one deft move, rather skilful I thought. Her pussy was so inviting, so I knelt down next to the bed and pushed her knees apart so I could dive in with my tongue. She was quickly sighing and moaning appreciatively, grabbing my hair to pull me into her.

Steve was standing behind me, moving to the side occasionally to get a good view of his wife's enjoyment, and I noticed he had removed his trousers so he could wank his cock vigorously. After a while, during which Katie had orgasmed noisily at least once, she said she wanted me to fuck her. At this point, Steve said very assertively, that I would need a condom. I had fully expected this, so I stood up to retrieve my trousers, which were lying on the floor.

In the time it took me to get the condom out of the wrapper and roll it on, they had moved to the centre of the bed, Steve sitting near the top, and Katie kneeling between his legs, about to engulf his cock in her soft mouth. She turned round to look at me and said that she was very wet, as I had already realised from the lengthy oral attention I had given her, and she wanted to be fucked vigorously, which I did to the best of my ability.

When I reached the stage of realising I could not hold back much longer, I asked Katie where she wanted it, thinking that she might want Steve to come in her mouth and me over her back, but she gasped 'inside …. inside', so I pumped my load into the condom. Steve had already cum in her mouth so, after allowing Katie to come down from her orgasm, I slipped out of her to go into the en-suite and dispose of the condom.

When I came out of the en-suite, Steve was spooned behind Katie, fucking her vigorously, I assumed this being his way of 'reclaiming' her. I knelt down next to the bed so I could kiss her tenderly, realising afterwards that she must have swallowed his sperm, and I could taste it on her mouth – definitely a first for me, tasting another guys sperm. She asked me to give her my cock so she could lick it clean for me, and this clearly triggered Steve's 2nd orgasm, inside his wife's pussy this time.

After they had laid there for a while, with me tweaking Katie's delicate nipples as I knelt beside the bed, they decided it was time to go back downstairs, so they duly cleaned up in the en-suite before dressing and we left the bedroom.

As we walked back down the stairs, Katie and I with our arms around each other, we were met by Tanya, the hostess, who said she was keen to get to know me better. I'm not sure whether Bill or Sue had recounting our experience with them at the campsite had something to do with it, or maybe it was seeing me with Katie coming down the staircase, but she was all over me, linking arms with me, and clearly wanting to take me elsewhere.

Tanya suggested that we should go upstairs so she duly led me towards the staircase. As we walked past the bedroom where I had heard Sue orgasming earlier, I heard another lady's voice in the throws of passion, which was unmistakably Di, my wife, orgasming noisily. Clearly Di and Sue were having a good time too.

Tanya led me to the main bedroom suite, as soon as the door closed behind us, she wanted a full-on snog, with lots of passionate groping. She turned round and ordered me to unzip her dress, which I duly obliged, and her dress fell to the floor. While I was round the back, I unhooked her bra, drawing a 'naughty boy' admonishment from her. She obviously approved of what I had done though, because she turned round and started to undo my belt, all the time trying to continue our passionate kiss.

Before too long, we were on the bed, me with just my socks on and her with stockings and suspenders (no knickers, I quickly realised) and a camisole top. I feasted upon her ample tits, sucking her nipples, whilst sliding a hand between her thighs, where I found a beautifully smooth pussy, which was already very wet. She pushed me over onto my back, climbed on top of me in a 69, and we proceeded to devour each other in a wave of passion.

Tanya had orgasmed several times – I had managed to hold on, I don't know how – when she climbed off me and turned round, asking if I had fucked Sue bareback at the caravan site the other night. When I sheepishly admitted I had, she said 'that's good enough for me' and threw her leg astride me, before lining up my cock and sinking down with a loud sigh. In those days, I could happily come at least twice in the same night (much more difficult 30 years on) so, with Tanya orgasming very loudly, I eventually bathed her cervix with my sperm.

Afterwards, we lay there for a while recovering our breathe, Tanya saying that having 'new blood' occasionally in their little swinging circle kept the group fresh and interesting. It was now past midnight, the time when the dress code downstairs relaxed, and Tanya left her dress in the bedroom when we returned downstairs. I assumed she wanted everyone to see her coming down the stairs arm in arm with me, and be in no doubt that she has 'scored'.

I looked around for Di and Sue, having suddenly remembered I should have been keeping an eye on my wife, but I couldn't immediately see them. The atmosphere downstairs had clearly changed with the passing of midnight, and I noticed a large lady with very little clothing on, sitting on a settee, wanking the 2 naked single guys either side of her. Between her legs was Tanya's husband, Nigel, who was eating out her pussy. As he moved up in readiness to fuck her, I realised he was rather more than the innocuous, skinny little guy I had assumed, as he had the most enormous cock! He must have been at least 10 inches long, with a girth to match and, when he presented it to the lady's pussy, she held her breathe and gasped 'oh fuck'. Tanya commented that she will be enjoying that.

We walked through to the kitchen to get a drink, where we met Bill, who looked as though he was enjoying himself with the front of his shirt undone, and a very attractive lady about my age with her arm around his waist. Tanya commented to Bill that she was sooo glad he brought their new friends to the party as she stroked my chest with her free hand.

As we walked back out of the kitchen, we saw Di and Sue walking down the stairs, looking slightly dishevelled, with 2 single guys walking down behind them – but I was pretty sure they were not the same guys who had followed them up earlier. Di and Sue walked up to us, Di giving me a passionate kiss on the lips, Sue doing the same with Bill and commenting that we still had our clothes on.

As we stood chatting, I felt a hand stroking my back and, when I turned round it was Katie wanting to say goodbye, as they prepared to leave,and she gave me a soft kiss on the lips. As he shook my hand, Steve thrust a slip of paper with his phone number into my hand and murmured 'call me'. As they walked away, Di smiled at me and commented she seemed nice, stoking my side again.

Bill suggested we should go upstairs again as a foursome, suggesting they usual enjoyed some 'reclaim' time with each other before they left a party. As we walked up the stairs, Sue said Bill would need to be gentle with her, as she was a little sore down below, and Di murmured 'me too'. Most of the action seemed to be downstairs now, so we readily found an empty bedroom, and we quickly stripped off to start orally stimulating our wives. Bill was keen to swap again but Sue admonished him, saying they were both too sore to be fucked again.

Eventually, we tidied ourselves up and, having thanked Nigel and Tanya for a lively party, we returned to the campsite in the early hours of Sunday morning for a good night's rest.

Sorry this has proved to be a bit long but, once you get going, it's difficult to stop – as Di and Sue discovered at the party.