Jessica becomes curvier and more submissive.

Of course, as much fun as this had been, Sarah had an ulterior motive besides just getting a blowjob from Jessica. Once she’d dutifully swallowed the load, which Sarah made sure she’d do by holding her head onto the cock until she felt the motion that signified her mouth was empty, Jessica climbed out from under the table and sat across from Sarah once more. Just as Sarah had expected, it looked like she had changed, similar to how Tom had. Her breasts looked like they were struggling to stay in her bra, bulging out enough to show even through her top. What Sarah didn’t know at the time was that Jessica’s ass had expanded out a bit as well, turning her panties into a thong in the process.

But there was something going on aside from asset enhancement. There was a strange look on Jessica’s face, like her mind was just gone, like she was on autopilot. While Sarah had always been the more driven and ambitious of the two, part of how she and Jessica had become friends had been the young woman’s intelligence and willingness to speak her mind. Curious to see what was going on, Sarah asked, “How did you like that?” in a tone of complete authority.

It looked as though Jessica’s mind latched onto those words like a drowning person clinging to a raft. “It was good!” Jessica blurted out, too loudly, before blushing a bright red. Sarah enjoyed watching her squirm, trying to think of a different answer, before hesitantly saying, “I, I really enjoyed it. I’d love to do it for you again anytime, ma’am.”

That made Sarah’s eyes widen. In all the time they’d known each other, Jessica had never called Sarah ‘ma’am’ before. Starting to feel like she’d gotten a handle on the specifics of the change, Sarah’s mouth curled into a smile. “Jessica, stand up,” she told her, confidently. Without hesitating, Jessica did as she was asked. “Look at you,” Sarah purred, “You’re my submissive slut, aren’t you?” After a moment, Jessica nodded her head, looking embarrassed. “Well don’t worry, Jessica. You can have more of my cock, and not just in your mouth. But not now. I’ll inform you of the arrangement more later, but for now just know that you’re mine. You are not to date anyone without my say-so, and you’re not to tell anyone of what we do together.”

“I understand,” was Jessica’s immediate reply. With that confirmed, Sarah waved her hand and Jessica retreated into the office. For a second, Sarah took pleasure in the fact she had two obedient sluts under her control. She knew now just how wondrous her cock really was.

But then she felt like she’d just woken from a strange dream. What had she just done? She was married, happily! Sure, Tom and her had their sexy fun, but she still loved him. Just because she’d grown a cock didn’t mean she could cheat on her husband! And how she’d treated her friend, it had been almost cruel!

Those moral arguments had difficulty sticking inside Sarah’s head, though. It was hard for her to think of Tom as a genuine equal partner. That growing sense of inner power almost refused the idea out of hand, and similarly was pushing her to think of Jessica only as her toy, to be used. Taking a deep breath, Sarah resolved for a middle path: she could keep having fun with Jessica, sure, so long as Tom never found out. But she would strive not to let that power go to her head, and treat both partners as real people. At least, for now.