We were in bed when I told Tracey that I would love to see her fuck someone else. She started crying. "You don't love me any more, " you just want other women." I assured her that it wasn't about wanting other women, I really wanted to see her have another cock and preferably a fairly big one. She went to sleep sniveling. I didn't raise it again for quite a while. She again was upset, but not as much as the first time. Then several months later We were screwing and I told her to imagine that it was a stranger with a big cock fucking her. She came thundering in like a runaway train. Afterwards we lay talking. I asked had she imagined someone else. She reluctantly told me that she had. I asked was it someone I know. She said it wasn't anyone real, but he had a big cock. Three days later we had just had a great fuck as I talked to her, telling her it was her bull fucking her. She came much harder than normal and took much longer to recover her composure. "The bull fucked you well then," I asked. She nodded. "Do you want him to fuck you again?" She nodded again. Thirty minutes later we had an even better fuck. As she recovered she gasped, "Do you really want me to fuck someone else?" I told her I did and that I would always love her. "Does he have to have a big cock? I told her it wasn't necessary that he have a big cock, but I thought it would be better if he did. No more was said about it for a couple of weeks. "Look at this," Tracy told me, "He's huge." She was on a personal website looking at men looking for women. The man she was looking at was indeed huge in the cock department. From his stated height I calculated that his cock had to be a foot long and it was still soft. "I couldn't take one that big," she declared. I was relieved that she had taken that position. I went back to my paper. "Look at this one," she insisted. This time the chap was a more regular height and size. I could fuck one like that, "she told me. What do you think. We read his profile and I agreed he seemed a good candidate to fuck my wife. His add said he was a single man, looking for single or married women wanting NSA fun. He is not Bi-sexual but will allow husbands or lovers to watch. He claimed his cock to be eight inches. Loves oral, anal, threesomes with two females, massage giving and receiving, plus other things. The area he was in was twenty miles away. I told Tracey that if she wanted to she could contact him. She turned the laptop off and walked away. Two nights later Tracey was shaking when she showed me her messages. There was one from Tom. He thanked Tracey for her message and said that he was happy to meet her wherever she liked for sex or just for drinks, whatever was good for her. It had a phone number and Tracey read it out aloud several times. I told her to ring it. Again she walked away. The next night was Thursday night and when she got in from work she was excited and told me she had rung him, and he sounded nice, and there was no pressure to do anything she wasn't happy with. She had arranged that we meet in a town half way between us in a bar we knew for a drink the following evening. Tracey showered and dried herself and put on a matching bra and panties followed by a tight blouse showing of a fair amount of cleavage and a short skirt and her fuck me heels. Then she sat doing her makeup. I could have fucked her then and there. She told me to keep my hands to myself, certainly for now anyway. We walked into the bar and got drinks and sat at a table facing the door. He was late and Tracey was about to say to leave, when five minutes late he arrived. His photo in the add was extremely accurate and I called him over and went to get Tom a drink. They were talking when I returned with Tom's drink and sat down. "You have a very beautiful wife," Tom told me. I agreed. He then told us about a few of his previous meetings and some that went good and some funny ones that went wrong. We laughed and were getting on great. Tom went off to the toilets and I asked Tracey what she thought. She said that she would love to fuck him as long as it was really what I wanted and wouldn't get upset or leave her. I assured her all was well and it was up to her. When Tom returned Tracey whispered something in Tom's ear and he nodded. They both finished their drinks and Tracey said we are leaving. In the carpark Tom told us to follow his car. Just a few miles down the road he pulled into the driveway of a large house and escorted us indoors, telling us it was a house he owned and was about to put on the market. We followed him upstairs to a bedroom. I could see Tracey trembling, I wasn't sure if it was excitement or fear. Then he pulled Tracey to him and kissed her passionately on the lips. Then his hands were stroking her arse cheeks. They broke for air and Tracey looked at me for approval and I nodded for her to go for it. This time Tracey kissed Tom and she grabbed his arse cheeks and wrapped a leg around his. Tom's hands were working on getting Tracey's tits out of the blouse and bra, it didn't take him very long. Then I saw Tracey's hand reach for Tom's cock. Tracey squealed," It's fucking huge," as she stroked him through his trousers. As they parted slightly so Tracey could start to unleash the beast, I could see it's size. Not only was it eight inches in length it was over twice as thick as mine. Tracey dropped to her knees and pulled Tom's trousers and pants down out the way. Tom's cock sprang out and slapped her on her cheek. She licked the head and then tried to get it into her mouth, but couldn't, it was far too thick, so she just licked up and down the shaft and licked the bulbous head. Tom lifted Tracey to her feet and undressed her. Then he lay her on the bed and went to work on Tracey's pussy with his tongue and fingers. Tracey was groaning and writhing on the bed as he played her pussy to perfection. The he kissed her tits and then her neck and ears. Tracey was squealing with excitement. Then Tom was between her legs with his cock pointing at pussy. "Ready," he asked Tracey. She nodded her readiness. then he looked at me at the same time Tracey looked at me, "Ready," Tom asked me. I told him yes but be gentle with her. He slowly pushed forward and Tracey's pussy resisted his cock from gaining access. He rubbed it up and down her crack and tried again. This time the knob end slipped in and Tracey gasped. I think due to his size and the suddenness of the penetration. Then Tom was slowly working more and more of his cock into her pussy. His knob virtually turning her pussy inside out as his cock sawed in and out. He was a little over half way in when she went rigid with her arse off the bed. She must have cum and flooded their genitals with her juices as Tom's next push saw all the rest of his cock slid fully inside her pussy. Tracey was gasping for air and Tom held still with his complete eight inches buried deep in Tracey's pussy. Then Tracey started to move again pushing her mound against Tom's as if trying to get more cock inside her. This was not missed by Tom who starting to pump my wife's over stretched pussy. I had never heard Tracey grunt and groan as much as she did that night. Tom glanced at me a few times to see that I was ok with my wife getting the fucking of her life. I just nodded to him. Then Tracey went into a series of orgasms that rolled from one to the next. Tom mouthed to me,"In her." I nodded and Tom slammed into my wife's pussy and unloaded his balls deep inside Tracey's pussy as she came again. They both lay there breathing heavily. Then they were kissing, like they were long time lovers. Tracey was thanking him for giving her so many orgasms, Tom was telling Tracey that the pleasure was all his to have fucked such a beautiful woman. Tom asked would she like some more. Tracey told him that she was far to sore for any more. Tom said, "Another time then." Tracey said yes and then got up and dressed. We left leaving Tom still naked on the bed. In the car I kissed my wife like I had never kissed her before. The love between us just flowed. We were half way home when Traced spoke, "Can I have him again or can I try a different one?" I stopped the car and kissed her passionately and told her, whatever pleases her, so long as I am there with her.