My stunning Wife turned 50 last year and, after the usual celebrations and special holiday were over and done with, she booked a long weekend in Benidorm with her two best mates. Nothing out of the ordinary here, just another 'Girl's Weekend Away' that she'd done pretty much annually for the last ten years or so. They went at the end of September while it was still hot and, apart from a couple txt's exchanged to check she'd got there OK, I was left at home to my own devices. When she returned a few days later, she was in great mood and looked even more radiant than ever. I should mention at this point that she has the looks and figure that most 40 year old's would die for with incredible 34G tits, blonde hair and a peach of an ass that looks even sexier with the few pounds she's gained over the years. I'd only just put the kettle on when she proudly told me that she'd 'still got it'. Asking her what she meant ? she cheerfully replied that she'd been chatted up by a hot 30 year old guy on Levante Beach. 'And.....?' I asked nervously 'anything else ?' 'No' she replied firmly, it had just been a chat and she swore it hadn't gone any further. I was relieved at her reply but also pleased for that she'd had an ego boost that had made her mates well jealous. With 25 years of marriage behind us, it wasn't the first time she'd been hit on but, apart from one brief Fling and a couple of drunken snogs, she'd been otherwise faithful as far as I knew. That was it, nothing more said (or thought) about it until a week ago when she'd arranged to have a 'Girl's Night In' at our House on a Friday night. Fine by me and an excuse for me to slip out to the Local for a few pints. On returning home around 11, I went in through the Kitchen (my usual route) and started to pick at their Chinese leftovers and I could hear raucous laughter coming from the Lounge. Not eavesdropping but, the mention of 'Benidorm' made my ears prick up and when I heard my Wife loudly reply 'What happens in Benidorm, stays in Benidorm' my attention was gripped ! I got a can from the fridge and walked into our Lounge to say hello to my Wife and her friends. They looked surprised to see me as they hadn't heard me come in and they were all in fine fettle with the Wine flowing freely. I left them to it and retired to our front room to watch TV and contemplate what I thought I'd overheard which had set my mind racing out of control. Fast forward about an hour and a half and the last of my Wife's friends was being waved off in a taxi. My Wife promptly came to find me in the front room, plonking herself on my lap and giving me a big snog, she was half pissed and we had the House to ourselves with the k**s away at Uni so I knew what she had in mind ! Seconds later I had her top off and was playing with her amazing tits taking turns on each of her nipples with my tongue which was causing her to arch her back in ecstasy. At this point, I couldn't hold it in any longer and asked her what she'd meant by her Benidorm comment ? She looked shocked and was a little flustered but, I'd asked her with a grin on my face so this must have given her the confidence to open up:- Turns out the guy on Levante Beach's opening line to her was 'You are fucking gorgeous !' as he walked towards their Sun Lounger's and my Wife was wearing a Swimming Costume at the time rather than a bikini but, had it rolled down to tan her tits and tummy. He had followed up his opening gambit with a smooth line in chat that had my Wife giggling away instantly and any attempts from her friends to get in on the conversation fell on deaf ears. At this point she said her two mate's must have started to feel like a couple of 'spare one's' so they headed off to get a drink from a Bar overlooking the beach. The guy must have viewed this as his green light and my Wife said as soon as they were alone, he'd complimented her on her amazing breasts and asked if they were 100% natural (which they are). She said she was flattered by his comment but he'd made her feel slightly self conscious that she was having a conversation with a complete stranger with her tits out ! With that in mind, she'd dropped the back of her Lounger and turned to lie on her tummy, still with her Cossie rolled down, and she instantly felt the warm drizzle of sun tan oil on her back followed by two strong hands rubbing it into her shoulders. 'You don't mind do you ?' he'd asked her and she'd replied 'No' which was the only thing she could think to say although she was shocked at him touching her ! This revelation had me gripped and, even though I'm worried about where it will end, she's still straddling me topless and I've got a hard on that's in risk of splitting my jeans ! 'So what happened next ?' I asked nervously 'Nothing' she replied 'he just oiled me up' 'All of you ?' I asked ? 'Just my back and legs' she replied 'And your tits ?' again, she replied 'No' as she'd stayed on her tummy although he had rubbed the sides of them slightly as he ran his hands across her back. My mind was spinning like mad now as I know how hot she gets when I massage her with baby oil and I asked her if he'd touched her pussy ? She said 'No but, he'd come close' - that fucking did it for me ! I had a sick feeling in the pit of my stomach and my heart felt like it was going to burst out of my chest so I asked to explain what she meant:- She said he'd parted her legs slightly as he'd been oiling them up which she hadn't objected to and he'd been running his hands over the inner part of her upper thighs with his thumbs running just under the bum line of her cossie and then back down again with his index fingers running past the outside of her pussy. I knew this technique only too well as I'd done it on her many times before causing her pussy to squelch a little and stretching her asshole as I seperate her bumcheeks. I looked her straight in the eye and asked her 'were you wet ? her reply of 'a little' accompanied by her her biting her bottom lip tipped me over the edge and i threw her on her back and we ending up fucking like crazy with our jeans around our ankles. Minutes later, we were in a sweaty mess with my cum dribbling out of her and I asked her the killer question;- had she fucked him ? This met with a stern 'No, it was just a massage' (on Levante Beach in broad daylight FFS !) but he had asked her to meet him that night but she'd declined and he'd gone on his way when her mate's returned. By now I was hard again and we were fucking like crazy with my thoughts on this strange guy's hands all over my Wife ! It transpired that her mate's had been watching the whole 'massage' episode from the Bar, which had lasted about half an hour, and the banter this evening at our House had been about that. The next morning i woke up with a raging hard on and went to get some baby oil from the bathroom whilst she was still asleep. Pulling the sheet back, she awoke with me oiling her back which she responded to instantly by lying flat and spreading her legs to show me her shaven pussy. I broke off from massaging her and told her to find her cossie, 'What ?' she said so I told her to put on the cossie she'd worn in Benidorm. A quick rummage in the draw later and she's got her hottest 'Curvy Kate' number on rolled down to just past her navel. With that, I got her to lie face down on the bed and start applying more baby oil re-enacting what she's told me about the guy in Benidorm and asking her to tell me 'Stop' if my hands went any further than his did ! This turned into quite a revelation and he'd clearly had a good feel of her tits and had not not only massaged the sides of her pussy but run his finger along her lips through the thin fabric ! This led to more frantic fucking including me fingering her arse whilst taking her doggy, which only ever happens when she is very drunk or very turned on, and her confession in the afterglow that he'd got her really turned on and she had actually agreed to meet him that night (but only for a drink) but it was scuppered by her two mate's getting pissed in the afternoon and being too wrecked to go out that night ! So here's my dilemma:- Unlike a lot of blokes on here, I've never previously fantasised about my Wife with other guys but, I've lost count of the number of wanks I've had in the last week thinking about it so I'm now starting to think I've become a Cuckold ! I've teased my Wife about this guy since and although she swears she wouldn't have slept with him I can't honestly say that I believe her.