It was a was a month or so after our first threesome that Jill told me she wanted to try and start a family. I reluctantly agreed as I wanted to watch her being used again but she assured me we could do it again after we had a child, and she stopped taking the pill. A few weeks later I booked up a hotel where there was a valentines celebration dance. We had fucked every day since she had come off the pill and that evening she was dressed for sex. After the meal I went to the bar and saw Adam an old friend who I had been in the army with. He was staying in the hotel as he was on business by himself and I invited him to our table to meet my wife. The quick introduction turned into him sitting with us for most of the evening, when he wasn't dancing with Jill. I say dancing but as the evening went on and the drinks flowed he was all over her and was clearly pushing his groin into her as he held her tightly. When he went to the loo Jill told me he kept pushing his cock into her as they danced and that it felt huge. We both agreed it was a shame she was not on the pill as she was really attracted to him. As the evening came to an end I told Adam that I liked sharing Jill and that if he could get some condoms it was almost guaranteed he could fuck her. I gave him our room number and told him I would leave the door unlocked for him. I took Jill back to the room and she talked about Adam most of the way. Once in the room I pushed her on the bed removed her skimpy knickers and spread her legs whilst I went down on her. She was soaked and as I fingered her I asked her what had turned her on so much. She replied Adam and what he had been doing to her on the dance floor. Apparently whilst in one of the darker corners of the dance floor he had got his fingers inside her knickers and nearly brought her to an orgasm. I was so turned on I stripped the rest of her clothes off except for her stockings, turned her over and started to fuck her doggy fashion. As I gripped her hips and pumped into her I told her to imagine Adam was with us and what we would both be doing to her. She kept on groaning and told me she wished she was still on the pill. At this point the door opened and Adam walked in. I reassured Jill it was ok and that I had invited him. He undressed and to say his cock was huge was an understatement. He offered his cock to Jill's mouth and she eagerly sucked on him making him even harder. I was so excited by what my wife was doing I came deep inside her. As I pulled out Jill turned around and started to suck and clean my cock leaving her bum in the air pointing towards Adam. He said what a lovely sight and that he would love to slip his cock into her but he could not get any condoms. Jill stopped sucking me and just groaned saying please. She was obviously desperate to have his cock in her. I nodded to Adam and with one thrust he was inside her. It was a good job she was so wet. He kept pumping at her hard and she could not suck me at the same time as she was moving too much and getting so much pleasure. I changed position to watch him fuck her and he placed her on her back. He continued to fuck her for at least ten minutes making her come twice. I just held her as much as I could and stroked her breasts or held her hand when possible. Adam then started to increase speed and said he was coming and where did she want it. Jill gripped my hand tightly, looked straight at me and said "Inside me please". I felt sick with jealousy but also incredibly turned on at the thought this man might make her pregnant and all I could say was "You heard her". He continued to pump at her and she let go of my hand as she wrapped her arms and legs around him. I stepped back as it was as if I was not there but she looked so beautiful as he fucked her. With a loud groan he came pushing his full length into her up to his balls at least three times. I could clearly see his balls contract each time as he pumped his seed deep into her. He stayed on top of her for a few minutes gently kissing and complimenting her, telling her how good it had felt to come inside her. He then dressed thanked me and went back to his room. I continued to stroke Jill and could not get over how wet she was. She told me that with Adams cock in her she had never felt so full and that she could feel each spurt of his seed as he had ejaculated inside her. She also told me that as he came she had an overwhelming desire for him to make her pregnant. I am sure she would not have said this if she had not still been tipsy as she would have known how much it hurt my feelings. It still excited me though and I got instantly hard at the thought and I fucked her again adding my second lot of sperm to her wet pussy. In the morning Jill was very apologetic and cried saying we shouldn't have done it and she should never have let Adam come inside her. I reassured her that I loved her and it had been me who invited him to our bed and we had jointly agreed for him to come in her. We had a very nervous two weeks to wait but luckily she was not pregnant that month. Every word in this description is true and because it was so exciting I can remember it all as if it was yesterday.