"Now for your transformation, you'll have multiple personalities that you'll also change yourself physically and mentally every time we have sex. One will be a big-breasted Japanese girl that is innocent and cute, another will be an exotic big-booty Ebony, another will be a Latina with curvy body, another will be a blonde MILF who is very motherly and kind, another will be a busty Redhead who is incredibly sexy and seductive like Jessica Rabbit, another will be a cute shorthaired athlete tomboy who can hang out with me, another will be a smart glasses girl who is also a nymphomaniac, and finally you are the original. During sex, you will switch between these personalities randomly without notice and you won't have control over the others, but you will still see what happens."
"Oh my, that's strange and interesting, hun. But I like it." Your girlfriend is surprised and smiles when she hears your answer. "And by the way, I've never known you would think about sex when we play a game."
"I know, babe. I know," you said as you're scratching your head. "But to be honest, I've been thinking about my cock as I had to get this idea, babe."
"Well, I don't blame you, hun. I know you boys can stop thinking about sex." your girlfriend replies when she's crawling to you. "Besides, I also feel so horny when you're not around, I've been masturbated a lot and think about you a lot, so when you're saying this. That turns me on."
When she finishes her sentence, she starts to kiss you deeply and passionately. Soon, you let go of your kiss and began to strip off all of your clothes until you were both naked, before going back to kissing. Then you both stopped and looked at each other bodies naked and were ready to take it to the next level. Your girlfriend take a look at your hard cock which was tend high, ready for some action.
“My…” she said with lust in her voice, “Looks like someone is ready for me.” with that she was about ready to put your cock into her vagina. Once it's ready, she leans back onto your cock taking the whole thing in as both of you gasp at the feeling. After settling a little, she begins to move up and down rhythmically. Soon after this, she speeds up more, bringing you to move your hips with her. As you both start to feel a building feeling, you sit up and grab her hips making her go even faster. While you both continue thrusting, your girlfriend's body starts to feel tingling as she's transforming if you have sex with her.