My wife and I had been married for ten years. Sex was practically a thing of the past. ( I do have your typical little cuckold cock...not quite four inches hard. )
She told me one day that she and her sister had decided to take a 'sisters' vacation to Boston. They had never done anything like that together but I didn't think anything out of the ordinary.
Her sister asked me to try to fix some corrupt files on her computer while she was gone and gave me the key to her house.
I drove them to the airport and went back home. Later in the day I went to her sister's house to work on her computer. I found out what the problem was and fixed it for her. Before I left I decided to do a little snooping to see if her sister had any hot stuff on her computer. I found a notepad in a drawer that contained her email password and couldn't resist. When I opened up her email I discovered that she and my wife had been emailing back and forth for a long time. My wife had told her she had a male chat friend in Boston and that he wanted her to fly up there. There were several emails back and forth, but the gist of it was that my wife and this guy were to the point where they were ready to fuck.
I was furious. I waited till that first night and called my wife. She answered and was pretending to be in the hotel room with her sister. I knew that they had planned to book separate rooms. I just flat out told her she was lying and that I knew she was in the room this man named Dan. She tried to act like she didn't know what I was talking about but I told her about the emails.
I didn't talk to her again till I picked them up at the airport. Not one word was said on the way home. She knew she had been busted. All I could think about was how many times Dan had fucked my wife for three nights.
After a few weeks went by I had calmed down enough and was horny enough to want to fuck her. Once we started all I could think about was his cock in her pussy. Her legs wrapped around his waist. The two of them kissing and relaxing together for three nights. For some reamister this started turning me on.
In the weeks to come, every time we fucked it was all I could think about. When I would ask her if his fucking was good and she would tell me yes it would make me cum instantly. Finally I asked THE question...." Why did you fuck Dan?"
She paused a minute and said, "Because I had never been with another man besides you in my life and I wanted to see what it was like. Dan had told me that you had a below average cock and I wanted to see what his bigger one would feel like."
I asked her if she had the chance right then, who would she rather fuck. She said, "If you want me to tell the truth....Dan."
That was it. I WAS CUCKED from that moment on. I shot my load into her as soon as she said that. From then on every single time we fucked I asked to tell me everything they did in that hotel room and how much better he was than me. I soon got to the point where the only way I could cum was by hearing her talk about Dan. I didn't want this to stop.
If you want me to continue this, please let me know and I'll tell about hot she evolved from just fucking Dan on a weekend to having a fuck lover on a permanent basis.