Chloe knew that you knew, and decided to act. She relaxed a little, her posture changing as well as her voice. Suddenly, it was like you had briefly imagined: Chloe's personality was in Kim's body, and something about that was suddenly exciting. Kim had an incredible body, you could stare at her all day, and here comes along Chloe, who had this slime ability that you didn't even realize. She's head over heels for you, and the fact that she can act upon it as Kim seemed to only further arouse you. You knew it was wrong, though... Kim's in there somewhere! She is trapped, unable to do anything while Chloe was at the helm.
Kim smiled, and it looked so different, it was like Chloe's smile at the pizza shop. "I knew something was bothering you on our date, and now I found a solution! I mean, you like this girl, right?" Her hands traced up and down that body, like it was feeling it for the first time. "You can't keep your eyes off of her. I bet you want to have your hands all over her, to be inside her. Now you can, see? I'm a symbiotic slime, so I can share organic bodies and change them inside and out. I could stay as Kim forever, or make her into a plaything for us. I could change her, I could be different girls for you! Maybe slime isn't your thing, I get it, but I'm here and willing to do anything to make this work. And I mean..." Kim suddenly walked to you, and slid one of her slender hands into your boxers, delicately teasing around your rock hard member, "...Anything."
"I--I... I don't know, Chloe. That's like taking her life! I love Kim, but I don't know if I can let you do this." Your body betrayed you, however, as you were clearly turned on by the prospect, and Chloe knew she had her hook in you. She kept smiling, and she undid her bra in a swift motion, letting her large breasts bounce out.
"Let me show you something, 'tiger'!" Chloe grinned, borrowing the nickname Kim used for you along with the rest of her. "I can change Kim's body to match any desire you might have. Watch!" Suddenly, Kim's breasts began to grow, jiggling this way and that as they did like they had a life of their own. Three cupsizes later, Kim pressed up against you, those rather huge tits pressing against your own chest. "One of many tricks! Don't make me leave so soon, please. Let me at least prove to you that I'm more than worth it, and you can have the best of Kim, and the best of me."