My best friend and his wife were having marital troubles and I was trying to be helpful. I'd known them both a long time and didn't want to see them broken up. My friend was always a bit closed lipped, even to me, so I went out with his wife one night for drinks hoping she'd tell me what was up.
She told me they both wanted different things. He wanted to really settle down and start having kids, she wanted to focus on her career and have wild adventures. I tried to be sympathetic, but I knew this was a problem I couldn't help with. I told her that sucked and we both kept drinking. When we were pretty smashed I admitted to her that I was actually jealous of how close she and my best friend were now. She said that was all well and good but sometimes she just felt so nailed down being married to him.
A strange woman walked up to us at the bar then and said she thought she had a solution to our problem. Before either of us could react the woman waved her hands and I felt dizzy. when I came to I was looking at myself and the woman was gone! I looked down and realized I was in the body of my best friend's wife! My body seemed similarly startled and revealed that my friend's wife was now in my body!
We had to come up with a plan. I'd pretend to be her and she'd pretend to be me until we could sort this all out. I headed back to my friend's house. He glanced at me coldly as I came in and suddenly I remembered the two of them had been fighting. I didn't say anything and went straight to the bedroom to go to bed. I went looking for a nightie but couldn't find one. I figured maybe they slept in the nude, so I did my best to be like her and stripped and collapsed into the bed.
My friend came in awhile later. He stripped too and laid down next to me. Then he started talking to me. He said he was sorry that we'd been fighting and how he didn't want to pressure me to do anything I didn't want to, but he really wanted to have kids someday. I told him that was ok and I forgave him, imaging that's what she'd say. He kissed me then and brought his hand up to play with my tit. It felt really good and I shuddered. He laughed and told me I always got horny when I got drunk. I nodded, trying to come to grips with what I felt when he kissed me again and started groping me more aggressively. I groaned and felt an alien sensation between my legs. An emptiness...
A few minutes later I was bouncing up and down on top of him, feeling my tits bounce while his cock pumped in and out of me. I was moaning, but he seemed to be struggling a little. So I started talking dirty to him. Nothing too dirty, but one of the lines I remember using was to ask him to pump a baby in to me. That seemed to get his motor going and I felt him squirting inside of me a short while later.
I was embarrassed as we spooned in the afterglow. I had really just fucked my best friend and told him to get me pregnant. I could only imagine the argument this was going to cause when me and his wife swapped back!
Well fortunately we never could figure out how to reverse the swap. His wife seemed to enjoy taking over my life and I had to admit, I liked taking over hers too. I quit taking birth control after the first month and didn't tell her. Me and my friend would fuck and I'd beg him to get me pregnant with his big cock as he came. When I revealed to his wife that I was pregnant a few months later, I was expecting her to scream at me. Instead she told me she was happy for me and wished me many children. We both decided to confront my friend, now husband about the swap after that. We debated it, but decided we both loved him too much to keep a secret like that from him forever. It took some adjustment, but he's gotten used to it. Weirdly, he seems to like fucking me even more now that he knows who I really am. Sure I can't beg him to get me pregnant again (well not for another 6 months or so anyways) but now me talking about how much I love being a girl is the thing that gets his motor running. The old me started dating one of her old friends, someone who she apparently also told about the swap. We all agreed we've never been happier.