Note: This story was dynamically reformatted for online reading convenience. I Let My Wife Get Pregnant By Her Lover Six months into our marriage my wife did as she had always promised, and took a lover, with my full knowledge and encouragement. As we had decided against children, I assumed she would be as careful about contraception with him as she had been with me, so it was a surprise and thrill for me when she declined the new pack of condoms I'd bought her. She told me that she wanted her first time with him to be bareback. She said that as she'd just finished her period, and it would be fine. Next morning she came home with a big smile on her face, and a pussy full of another man's cum. I was in rapture. When the initial shock and delight settled, we talked about contraception. She didn't want to stop having him cum in her, having loved it so much. I gave them my blessing to fuck to their hearts content, but asked them to be careful not to cause any complications in the form of a pregnancy. We all agreed it was too early for that (though if she decided she wanted to be his, I would of course give her an immediate divorce). They decided on the rhythm method, helped by a hormone monitor device. That allowed them to fuck freely for most of the month, with just a few days where he would have to finish in a different orifice. She became a complete cum addict, always wanting a refill. She also decided to stop having sex with me, and to become his exclusively. Six wonderful months into her new relationship, and near our first anniversary, she spent a long weekend with him, returning on Sunday night, so as to be ready for work. She is usually immaculately turned out, but that evening she walked in looking fantastically sweaty. Her hair was all messed up. She had obviously just left his bed. She wanted to talk. She told me how they had made love all weekend, and because it was her fertile time, he had cum in her mouth, her arse, and over her belly, time and time again, but not once in her pussy. Each time they had talked about making a baby, and he'd told her how much he wanted to fill her womb and give her a child. She began to realize how badly she wanted his baby by then. It was a physical yearning that she could no longer ignore. She asked me to allow him to impregnate her, promising me anything I wanted. Right then all I wanted was to see her freshly fucked pussy. I wanted that so much that I was shaking with excitement and emotion. I asked her to strip for me. We went to the bedroom, and without taking her eyes from mine, she lay back on the bed and pulled down her jeans and knickers. Then she parted her legs and showed me a sight I will never forget. Between her legs, where I'm used to seeing my lovely wife's tight slit, her vagina was open in a perfect O, just as if she had been opened with a speculum. I've never seen anything like it in any porn shot. She wasn't just gaping, it was as if she had another mouth down there that was begging to be filled by a man. As she lay there transformed by her lover's love from a girl into a woman, I knew I had no choice but to let her finish the mating that she had started. She was telling me again how much she wanted his baby to be growing inside her, and I found myself saying, "Yes, I do want you to get pregnant by him." All night she kept saying, "Do you really mean it? You'll really let me have his baby?" and laughing and kissing me. I've rarely seen her so happy. Later out of bed we talked seriously about the choices they had. She could become his wife if she wanted, or she could have his baby, but stay married to me, and I would happily adopt it, if that was what she wanted. After many nights and days talking to her lover, she said I was a wonderful husband, and would make a great dad. She had decided that she was going to have her lover's baby within our marriage. He was happy with that, as he wanted children, but didn't really want the family life. A couple of weeks later it was her fertile period, and at last my wife of just one-year spread her legs to mate with another man. It was beyond my wildest dreams, but it felt fantastic, and even more so a few days later when the test showed positive. Soon her belly swelled to an enormous bump, and she just bloomed. I don't think she was sick once, she looked gorgeous, and nine months later I was there to see their beautiful baby born.