Looking back I'm sure it was the moment when I saw her partially backlit that filled me with desire. The sun created a shining halo to her hair and perfectly framed the innocent smile on her beautiful face. So far so very respectable, but the backlighting made her dress semi-transparent, emphasising the firm swell of her breasts and the wonderful shape of her legs.
How many times had I spread those legs and thrust into her, drawing inarticulate moans and gasps before firing my load into her core. We'd been married for twenty years so there must have been thousands of times.
Suddenly now we were free and I felt restless and unsatisfied. All our energies recently had gone into our family, but within a period of twelve months both our children had headed off to university and become independent.
Both of us saw this holiday as an opportunity to reconnect, to become a couple again. My apologies if this comes across as a bit selfish, but, for what felt like a long time, Karen had been a mother, now I wanted her back as a wife.
Fortunately I think she felt the same way. She might have been nearly forty, but good genes and an interest in sports meant she had kept her looks and figure. I won't claim she was exceptional, and I know I'm biased, but she could have passed for thirty and when the mum's got together at High School events, it was clear she was in the top 10% and I intercepted quite a few admiring looks from the men present.
On one memorable occasion I overheard two men discussing the attractive brunette in the black and white skirt. When I told Karen about it later, she was alarmed that they had described her as a MILF, but reluctantly admitted that the fact that they found her attractive was flattering.
I had tried to encourage Karen into being more sexually adventurous. I got a surprise when she told me one of her friends had asked her whether we would be interested in an evening where we swapped partners. Karen didn't even consult me, she just turned it down politely, but firmly and told me later.
"I know you think I'm a prude," she said. "But it's just how I am, so swapping isn't going to happen."
Shy and strait-laced she may have been, but I was delighted to find that she was a bit of a closet exhibitionist. I've always been interested in photography and I'd been surprised how easy it had been to get Karen to pose for me. I took some very explicit full-frontal shots and our photo sessions always ended with Karen getting very wet and asking me to fuck her.
I'd made it clear that I wanted this holiday to include a few photo sessions; Karen made what felt like a token protest and had then gone along with the idea. So I'd made sure that as well as a selection of sensible undies, she had also packed some of the skimpier, lacier items she owned.
These had been unpacked as soon as we arrived at our hotel, but it was quite late and there really wasn't much time for anything else. The following morning we had a leisurely breakfast then took a walk round the grounds of the hotel. These included two small lakes with footpaths which curved round the far side and close to a river, though that was actually fenced off from the hotel grounds.
In the afternoon we claimed a couple of loungers next to the pool and settled down with our books. Later we both got in the pool and did a few lengths, but Karen is much more of a swimmer than I am and I got out and went to the bar while she stayed in to do some more lengths.
I got chatting to another British couple at the bar so I was a bit slower returning to the pool than I expected. I was surprised to see Karen still in the water, but stood at the side chatting to a guy. She smiled and introduced me to Greg, then excused herself saying her skin would start to look like a prune and climbed out of the pool. We settled back on the loungers with our drinks and Greg began to do a few more lengths of the pool.
He was a confident swimmer, moving easily through the water with firm positive strokes. After several lengths he levered himself out of the pool and began to dry himself off. I guessed he was in his early thirties and clearly in much better than average shape.
I didn't say anything to Karen, but the body language as they were chatting in the pool had been very relaxed, which surprised me because Karen is normally rather shy and reserved when meeting people for the first time. I was tempted to say something to Karen, but decided that might annoy her so I left it.
The following evening we'd been out to a restaurant for a meal and when we got back to the hotel Karen suggested a walk round one of the lakes. It was still very warm, the moon was out and the subdued lighting by the side of the path added to the romantic ambiance. I knew that half way round the lake there was a stone shelter done in a mock classical style and my plan was to pause there and see if Karen was receptive to a kiss and a caress. Actually I hoped we might have sex al fresco. I don't think Karen would normally be willing to risk it, but she'd had more wine than usual at the restaurant and I was hoping that would lower her inhibitions.
We were very close to the stone shelter when, to my annoyance, I saw someone approaching from the opposite direction. That was, at least temporarily, going to put a brake on my plans for the downfall of Karen's knickers, then I got a bit of a surprise when I realised it was Greg.
Karen smiled and said hello and we ended up chatting with him for a while. It was clear from their conversation that Greg had been here for several days and he recommended a couple of restaurants and places to visit. While we were chatting another couple came past and I decided that sex would have to wait until we got back to the room.
I was again struck by how relaxed Karen seemed when she was talking to him. A bit later when we were wandering back towards our room I commented that Greg seemed a pleasant guy. Karen agreed and I said it was odd that he was here on his own.
"He was supposed to be coming with a friend, but he broke his ankle, which is a bit ironic because both Greg and his friend are doctors. Anyway Greg decided he needed a break so he came on his own."
"You seem to know a fair bit about him," I remarked.
"Well you were a long time getting those drinks yesterday, so we had time to talk."
"He might be gay," I teased, though to be honest I hadn't picked up any hints that he was.
"I don't think so," said Karen. "Not given the way he kept looking at my breasts when we were talking at the pool. He wasn't being blatant or crude about it, but he couldn't help sneaking glances at them."
I could understand that because Karen has fabulous 36D breasts and the white bikini she had been wearing yesterday becomes slightly see-through when its wet and Greg would almost certainly have seen a hint of her prominent dark areola.
We reached our room without too much more being said, but as soon as we were in bed Karen cuddled up to me.
"You were going to try and seduce me out there weren't you, but then Greg came along and spoilt your plans."
I was surprised my intentions had been so obvious and said as much to Karen. She laughed.
"I can't put my finger on why I knew, but I did. Anyway we haven't had sex for a while, so you must be desperate for it. Would you like to fuck me now?"
She reached down and squeezed my balls.
"Or would you like to save it for tomorrow night and take another walk round the lake?"
My reply was out even before I'd chance to think about it.
"Perhaps you'd like to take a walk alone and see if you bumped into Greg."
There was a silence and I wondered if I had gone too far.
"Is that what you want?" Karen asked, her tone deadly serious. "You want me to save myself for Greg?"
I could feel my heart pounding and I was dry mouthed as I took the plunge.
"It would be exciting," I said rather lamely.
"What would be exciting?" Karen asked in a soft, calm voice.
"If you saved your body for Greg," I gasped.
"Does that excite you?" Karen asked. "Would you really want that?"
In reply I took her hand and in the inky blackness I placed it on my rock hard cock. Copious amounts of pre-cum were leaking from the end and she swirled it round with a fingertip.
"You are very excited aren't you? Well you want me to save myself, but it's clear you need some relief, so I guess you had better make yourself cum."
I paused, unsure exactly what to do, but Karen made it clear.
"Put the lamp on, I want to see you make yourself cum."
This was very different from our normal vanilla sex. I was eager to comply and switched the bedside lamp on, then lay back down and began to stroke my cock.
"Think of me spreading my legs for Greg and his massive erection sliding between my cunt lips. Picture him giving your wife's married pussy a good fucking and cumming inside her."
That was too much for me. I gave a climactic groan and the first rope of cum shot across my chest.
"That's it," Karen purred. "Cum for me."
Another rope of sperm splattered on my chest, then another.
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Karen continues the story.
At breakfast the next morning I felt a bit embarrassed by how I'd got carried away on the previous evening. However there was still a lingering feeling of excitement, so I decided that a bit of teasing was called for.
"Did you enjoy last night?" I asked. Tony nodded a bit sheepishly.
"I did," he said. "I must admit you really surprised me. I've asked you about sharing before and you've always said no, but last night you seemed interested." He paused then fixed me with a look. "Are you interested?"
That was a serious question, and to give myself time to think I replied with a question.
"Would you really want to try it? I just don't get it, why would you want your wife to have sex with another man?"
"I'm not sure I can explain it, but I did Google it once and it seems to appeal to quite a few men. One article said 20% of men, another put it as high as 50%. There was another article which linked it to a past where mating was more communal and the sight of your woman having sex with another man would make you want to mate with her; the intention being to replace his sperm with yours."
Fortunately there was no one nearby and no risk of being overheard, but even so I was blushing. Such a frank exchange over breakfast was having an effect on me and I kept having to cross and uncross my legs. We'd talked about this before and I'd said it was a fantasy that was never going to become reality. But we were on holiday, away from any prying eyes, and there was a handsome man who was interested in me. Tony looked straight at me.
"Yes I really would like to try it, but I'd only want to do it if you're willing. I don't want to twist your arm to do it, and anyway if I tried to do that, it would just annoy you. But what do you think? Are you willing to try it?"
I ran a finger round the rim of my coffee cup, then looked up with a shy smile.
"Possibly."
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"I can't believe I'm doing this. I must be mad."
"Not mad, just a bit naughty, but in a very good way," Tony replied with a grin.
I was sat on the balcony to our room with a glass of white wine on the table. We'd just come back from a pleasant meal at a nearby restaurant and were sat looking out across the lake. My stomach was full of butterflies because we'd agreed that if we saw Greg taking his usual evening stroll round the lake I would head out and do a circuit in the opposite direction. The intention was that I would meet him halfway, near the stone shelter and we would see if anything developed.
Was I willing to let anything develop? I'd had a bit more to drink than usual and I wasn't sure whether that was to give me some Dutch courage or an excuse, or a bit of both. I still wasn't sure whether I would go through with this. I was a virgin when I met Tony and he was the only man I'd had sex with. If I went with Greg that would change and there would be no turning the clock back. I'd said all this to Tony and he'd made it clear he was happy for me to have a liaison, but at the end of the day the decision was mine. Any further thoughts were interrupted when Tony made a suggestion.
"Why don't you take your bra off? It would fit the mood of the evening if you did."
I was wearing a sundress with thin shoulder straps, sandals with a bit of a heel, a lacy white bra and matching panties.
"I can't do that, it would be too obvious."
"Why not? They may not be quite as firm as when I met you, but you still have wonderful breasts."
Tony stood up, came round behind me, got me to sit slightly forward in the chair, then unfastened my bra and removed it. It might seem odd, but that single action really did seem to ramp up the sexual tension. I sat there, outwardly calm, but constantly scanning for any sign of Greg and very aware of the moist arousal between my legs.
In the event it took another fifteen minutes (which seemed to last forever), and then we both spotted Greg at the same time. He came along the main path, paused to speak briefly to a couple, then headed for the path round the lake. I looked at Tony and he smiled and told me to go.
To my surprise and annoyance I was trembling slightly as I got up, and walking down the stairs I felt very nervous. I calmed down a bit as I took the path around the lake and for the hundredth time thought about what I was going to do. My plan was to get to the stone house before Greg, linger there until he arrived and then see what happened. Perhaps nothing would, but Tony had encouraged me to "go with the flow."