Liz and I had often fantasised about her having another man. I’d given her the green light to do it if the opportunity arose as long as it was a one off and she told me about it afterwards. Several years on and it still hadn’t happened. That surprised me really as Liz is a very attractive woman. She is a 5’1” slim, petite blonde with a great figure and fantastic breasts. It was our fifteenth wedding anniversary. Liz and I had decided to treat ourselves. We saved up to go to a top London hotel for the weekend. It was very expensive with a high quality restaurant but we felt we deserved it. The weekend came and we spent the first day doing the whole tourist bit. We got back to the hotel, exhausted and Liz decided to go and use the gym to unwind before dinner. I couldn’t be bothered so stayed in the room and had a sleep. About an hour or so later, Liz came back looking all pleased with herself. “What’s up with you?” I asked. “I’ve been chatted up,” she said, with a big smile. She went on to explain how a bloke helped her to set a machine up and they got talking. By the sound of it, she’d done hardly any exercise! They’d spent most of the time sitting and chatting in the Jacuzzi. “He’s called Mark. I knew he fancied me straight away,” she said. She explained how he couldn’t take his eyes off her body. “He confirmed it when he asked me to join him tonight for dinner. I knew you wouldn’t mind, so I said yes.” I couldn’t believe it. This was our anniversary. We’d been saving for months for this and my own wife was standing me up! I saw that she had a glint in her eye that I’d never seen before so I had to agree. We haven’t got much time, she said, “I’ll have first shower.” With that, she was off into the bathroom for an age. She came out in a hotel bathrobe and a towel wrapped around her head. I then watched Liz get ready. She dried her hair and started on her makeup. I watched her paint her finger and toe nails. This was stuff I’d seen her do hundreds of times but always for my benefit. It was really weird seeing her get ready for someone else but, somehow, strangely erotic. “Look darling,” she said, “I’m not sure what will happen or if I want to do this. Once I’ve been unfaithful, there’s no going back. Are you sure you’re comfortable with it?” I assured her I was and it was what I wanted. As a safeguard, we agreed that, after the meal, Liz would nip to the loo. I’d go too and we’d meet outside the toilets to make sure we were both still okay with her continuing the evening with Mark. That reassurance made me a bit more happy with it. I watched Liz continue to get ready. With hair and make up done, she started to get dressed. My jaw nearly hit the floor when she put her underwear on. She’d only gone and bought some new gear as a treat for me for our anniversary. It was a black, quarter cup bra which meant her nipples weren’t even covered with a matching thong. Although, clearly very expensive and classy, it was the type of set I’d have expected her to wear in bed, not to go out in. She then put on a black dress that showed off her cleavage fantastically and stopped just above the knee. She put on her black, patent, killer heal, strappy sandals with her best earrings and diamond necklace that I’d bought as a very expensive anniversary present and she was set. She gave me a long, lingering snog and said “Remember, I won’t do anything until we agree it after the meal. I’ve really got to go.” She gave me one last kiss and Liz was out of the door. I had a very strange, almost despondent feeling but it was mixed with an overriding sense of being incredibly turned on. Liz was meeting Mark for a drink before going through to the restaurant. That gave me time for a quick shower then get to my table first. As I was seated, I got to see where all the money went. It was a very nice place and the service was excellent. I was the only person dining alone. It seemed strange as we’d been planning a special meal together for so long. I’d just got a glass of wine when they walked in. To all intents and purposes, they were just another couple. I was the only person who knew that Liz was actually my wife. I’ll never forget the feeling of seeing her walk in with another man. I’d never experienced anything like it. It was a heady mixture of jealousy and eroticism. Liz glanced over briefly but soon gave her full attention to her new date. He wasn’t as I had expected. Liz told me he was big in the city. I’d pictured him as a young trader type. He was actually, probably about forty but looked younger. He was immaculately groomed and turned out. He was clearly fit and someone who spent time at the gym. I could see what Liz saw in him. My meal came but it was a bit of an anti-climax. I hardly tasted it as I was transfixed watching the two of them. Mark was clearly entertaining her. She gazed into his eyes, laughed at his jokes and was certainly enjoying herself. It was so strange to watch but, as time went on, I thought my cock would burst out of my pants. As we got to puddings, I started to wonder what to tell her to do. Did I really want my wife to go back to another man’s room? She’d want me to tell her what to do but what did I want? As I pondered it over, I saw them interlocking arms and feeding each other their puddings. They finished and she put her hand on his on the table. She was starting to get quite intimate with him. She’d soon be leaving for the loo and I had to make my mind up but I was still struggling. With that, Liz stood up. Mark did too. This could make it tricky if he went at the same time. I got up to head in the same direction to discreetly meet Liz. I wasn’t, however, prepared for what happened next. Liz took Mark’s hand and led him from the dining room. I followed hurriedly, trying to keep a discreet distance. She led him straight past the toilets and into the lift. This wasn’t part of the deal. As I got near the lift, the door started to close. As it did, I saw Liz turn towards Mark. She lifted her head and I saw their lips meet, just as the doors closed. To say I that I was surprised was an understatement. The dirty bitch had taken it upon herself to go back to his room without even checking with me as we’d agreed. There was little doubt in my mind now what she was going back for and I can only assume that she didn’t run it by me in case I said no. I was a bit worried. I’d never spoken to this man. Liz had only met him a few hours ago and was now heading back to his room and I didn’t even know which one it was. I made my way back to ours to wait. I sat on the bed trying to imagine what was going on. Although the plans had changed and I was still a bit worried, I don’t think my stiffy had gone down since she first told me she’d met someone in the gym. After just five minutes or so, I got a text. It was from Liz. It read, “I’m in his en suite. Happy 15th Anniversary darling. Turn TV off. When phone rings, answer it but don’t say a word or there won’t be a 16th. Love u, Liz x ps, Rubbed his cock in the lift and it feels bigger than yours – can’t wait!” This was something else I wasn’t expecting. Liz certainly had a newfound confidence and there was little doubt that she was enjoying herself. A minute later and sure enough, my mobile went off. It was Liz. I picked up as instructed and didn’t say a word. I heard a door close, a bit of talking and laughing for a few seconds and then silence. I heard a bit of movement and then what sounded like clothing being removed. She’d left the line open so I could listen in without him knowing. This was fantastic. I then heard Mark moaning gently while Liz was silent. I soon got to know why as he said, “You suck it well, keep going”. The moans got more intense as she went on. Liz gives really good head and from the noises coming from Mark, he seemed to think so too. Things settled down a bit for a few minutes. I heard more talking and fumbling but couldn’t make out the words then back to more of the same. There was a bit more fumbling and giggling then a break. Was that it? Would my wife return after sucking him off? The line stayed open so I guessed not. The gap didn’t last very long before they were at it again. This time it was his turn to repay the favour. I could hear the unmistakeable sounds of Liz being licked out. I could visualise my lovely wife, lying with her legs open with a man’s head between them and she’d only met him a few hours before. He was obviously doing a good job as I heard her reach orgasm quite quickly. “I needed that” I heard her say. She then said, laughingly, and went on, “That was all well and good but I want to feel that big cock inside me. I want to feel you deep inside me.” This was music to my ears. Any doubts I’d had were now long gone and I was really enjoying the show. Liz was doing a great job and certainly didn’t seem to have a problem throwing herself into it. There was a bit more background noise before I heard her say, “Ooh yes, that feels really good.” There were a few moans and groans before things picked up a pace. I could hear Mark really going for it and Liz loving every minute. I heard her screaming at him, “Fuck me, Fuck me hard, I love your cock, give me it all.” She isn’t normally that vocal. I wasn’t sure if it was just for my benefit. I don’t think it was as she was really screaming. I heard her shout, “Harder, harder, I’m going to come, fuck me hard, I want to feel you shoot inside me.” This seemed to last an age before I heard Liz scream that she was coming and it seemed to have an intensity that she never gets from me. Things calmed down for a bit. I heard chatting and giggling before she ended the call. I got a text shortly after which said, “Hope you enjoyed it as much as I did (but I doubt it) – Going to hang around to see if he’s up to another session – see you later, Liz x” That was it then for about two hours when the door opened and Liz was back. What a difference a few hours can make. I hardly recognised the woman I’d kissed goodbye. The classy, elegant vision that had walked out of the restaurant now looked like she’d run a marathon. She did, however, have a giant, beaming smile across her face. “I’ve been a very naughty girl,” she giggled. “I know”, I replied. She then asked if I wanted to know what had happened. That didn’t take much thinking about. Liz took great pleasure in giving me chapter and verse about what she’d been up to. She explained how wet she’d got just getting ready. She went on to explain how she was dying to get back to his room all through the meal. When she got back, how she decided to text me so I could listen to what she was up to. She explained how she’d felt as horny as she can ever remember after Mark had undressed her and she was standing naked in a stranger’s hotel room with his hands all over her and her husband listening in without him knowing. Liz went on to describe Mark’s body in full detail as she relived every second. She described how his cock was so stiff. She’d given it a quick rub through his trousers in the lift but still wasn’t expecting the rigid eight inches that she got. She told me that she had to taste it and loved sucking him off. She was surprised at how much he came. “There was loads,” she said. ” I did my best to swallow it all but it went everywhere. Do you want to see?” I told her I already had noticed she had some in her hair and on her dress. She said, “I can do better than that” and pulled out our camera. I now found out what the muffled pauses and giggling had been about. The dirty bitch had asked him to take photos of her. She switched the camera on and started to show me a series of pictures. The first was of her lying on his bed in her underwear. I have to say that she looked fantastic. Although I knew exactly what they’d been up to, the next one still shocked me. It was a picture of Liz sucking his cock. He’d clearly taken it from a standing position looking down at Liz who was on her knees. She was looking directly into the lens. The eye contact was superb and she looked like a real slut. She had her lips circled around the end of his cock and her left hand wrapped around it. The flash had caught her wedding and engagement rings perfectly and the overall effect was mind blowing. The next was one of Liz after she’d finished sucking him off. It was an unbelievable shot. She had her mouth wide open showing a copious amount of cum on her tongue. She also had great big dollops on her chin, around her face and some on her eye. She looked like a real slut. “I told you I’d been a naughty girl,” she said. The next few pictures were all of her being fucked. They were all taken by Mark so none had his face in. One showed Liz lying on her back with her legs wide apart and a really wanton look on her face. Mark’s cock was less than an inch from entering her. This was my favourite picture of the lot. I was then treated to several of him banging her on top or from behind. Liz had a great look on her face throughout. It was a combination of ecstasy and filth. “Well then, what do you think?” she said. I was lost for words. She pulled her dress over her head and said, “Thank you for the best night of my life, now it’s your turn.” With that, she pushed a finger inside her and said, “I want you to taste.” She smeared her finger gently around her lips and leant forward to kiss me. I could taste a mixture of the two of them. It was almost too much to bear. I went down on her and stated to lick her out. She smelt and tasted of sex and still had spunk running out of her. She had her eyes closed and I knew that she was thinking of him but that just turned me on even more. I had to fuck her and I frantically entered my wife and enjoyed the delights of sloppy seconds for the first time ever. “I want to do it again with someone else and next time I want you there, watching” she said. I couldn’t wait.