The Experiment
Copyright© 2025 by Naughty Sarah
Chapter 12
Romance Sex Story: Chapter 12 - A device that alters reality. Simple, right? Now, instead, what if it could alter humans? Two people experience "thought amplification", itself amazing, but then go a quantum leap forward in body swap/modification. Adventure? How about SEX like you've never felt, never imagined before? Wrap this ultra-human experience around a growing love story (love triangle?) and you have The Experiment! It's the quintessential EROTIC adventure never before experienced by humans. Sex starts slow but HEATS UP!
Caution: This Romance Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Consensual Romantic BiSexual Heterosexual Fiction Restart Workplace DoOver Time Travel Body Swap Group Sex Bestiality Cream Pie Masturbation Oral Sex Sex Toys Voyeurism Transformation
They both got into bed and spent a while in foreplay. Katie enjoyed the closeness, the feeling of satisfaction in having a bedmate, someone that would be with her during the time she was normally alone. She realized that she was giving herself up to Jason, and that he would probably never again be content without her.
Each moment they spent together drew them irreversably closer. Finally, Jason stopped playing with her breasts long enough for his fingers to play with her anxious pussy. His touch made her grow hot inside. The heat drew his fingers in.
Other fingers found her anus, which magically opened as he touched it. One finger played around the edge, and then carefully probed inside. It was warm like her pussy, pushing against him, loosening to let him further in. He could feel the fingers that were in her cunt, rubbing the flexible walls between his fingers.
Just as happened with the Device, she was so excited she started coming right away. She held his hand, fingers inside, pressing hard against the soft space between her legs. She spread them apart, lifting one over Jason, so he could reach deeper. Her come leaked out around his fingers. She was shuddering. Jason was very close to his own orgasm, stimulated by the pure energy that Katie was releasing.
She was ready. She took Jason by the shoulders, and lowered her knees so he could climb between them. Once he was between her legs, she lifted them and wrapped her legs around him. He aimed carefully, and as she squeezed him, the tip of his cock rubbed against her rough pubic hair.
Her pussy’s lips slowly separated, and Jason’s cock was now welcomed into the wet area just outside her cunt, her pussy’s lips sliding up around him. He slid very slowly into her, pushing deeper, and in seconds began a slow, rhythmic motion. She pulled on his cock, then squeezed it inside with her powerful muscles.
He was very hard, but she could still feel his cock yield to the force her pussy exerted. It made it tight, and sealed the plumbing that now existed between them. She anticipated his orgasm, pulling him in with her legs. The tip of his cock seated against her cervix, the walls of her pussy were now involuntarily contracted, the tight feeling letting Jason know that Katie was having her orgasm.
Jason’s come pumped out of his body into Katie’s, travelling into her pussy, through his cock, and directly into her womb. From the point where Jason’s cock entered Katie, they could both feel it happening.
He kept pumping it into her for several seconds, the hot semen disappearing into her so efficiently, that her newly ovulated egg would have certainly been fertilized if it wasn’t for the SBC that only minutes ago started effectively protecting them.
It was over. Katie tightened her (rather tired) pussy so she could roll over, on top of Jason, without losing him. She put her legs between Jason’s, closing them tight around his cock, which was still entirely inside her. She put her head on the pillow right at Jason’s shoulder, and both went quickly to sleep.
As they slept, Katie’s pussy went to it’s resting state faster than Jason’s cock. Her opening shrank almost to its normal, unexcited state, squeezing Jason’s cock tight enough to prevent the blood from leaving it. He couldn’t shrink this way, so her sleeping pussy held his still-enlarged cock quite firmly. It was a technique she liked to use, for it meant more excitement when either of them awakened.
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