With so much discovery and fun with Alice's transformations, you decided to grab a bite to eat.
You put on your clothes and went out to buy something to eat at the nearby convenience store. When you got back to your girlfriend's room, you found her still naked sitting on her bed with her back to the door. You had almost forgotten the necklace when you realized that Alice was headless, even so, you controlled yourself, especially after hearing a noise coming from there and noticing her with her hands between her legs. Getting close to her you realized that she had used the necklace's power to become a dullahan and was holding her head between her legs and, by the position she was, you thought of her taking advantage of this form and licking her own pussy.
"Having fun without me?" you asked with a playful tone in your voice and she looked over at you, finally noticing your presence, but you also got your own surprise when she lifted her head, as Alice was sucking on an 8 inch cock that was where her pussy should be.
"Hi darling, I forgot the time and didn't notice you coming." Alice said
"I got it but, what about that?" you said
"Oh, it's about my dick, right?" she blushed "While you were away I experimented more and discovered that I can transform myself into whatever I'm thinking of when I have my finger touching the jewel I become exactly what I'm thinking, if my choice is not compatible with the stone, otherwise the necklace searches my mind and I become the first if compatible that is found in my mind. I then imagined myself with male genitals the last time I became dullahan and to my surprise it worked and I had my pussy replaced with my dick. In addition to becoming creatures, I can choose gender as well. So I decided to take advantage of having a dick and experience what it's like to cum with one before going back to normal." she said
"I didn't know you liked that stuff." you said
"I didn't know either, but all the transformations make me very excited and, it seems that I discovered a side of myself that I didn't know. I hope you don't think badly of me for that." Alice said
"It suits you well. I mean, you look good having a dick." you say blushing, making your girlfriend blush more too.
"Do you want... Would you like to fuck me while I'm like this?" Alice asked, laying her head on the bed and so her body turned her head and offered her ass to you.
Seeing her bare ass and balls from behind turned you on more than you expected, so you took off your clothes and started fucking her ass. Your girlfriend then approached the bed and lowered her dick, putting it in and fucking her own mouth. You continued to fuck her and at some point Alice stopped moving as she came and was somehow able to swallow her own cum. Only when her orgasm passed, you came.
After you came, you hugged Alice's body, feeling your half-erect cock touching hers, and you just didn't kiss her because her head wasn't between her shoulders.
"That was great honey. The more I learn the more I like your gift. Thank you very much for this necklace." Alice said taking your hand and guiding it to her chest, where you touched the jewel at the same time as her. When this happened you felt heat spread from your point of contact with the jewel to your whole body and, quickly, you went lower, your cock and balls were sucked into your body leaving a vagina in its place and huge breasts grew on her chest, her hair grew to her waist and changed color, becoming blonde, her defined muscles gave way to extremely feminine curves along with all her body hair disappearing.
"Did I become a woman?" You asked, even your different voice leaving no doubt that you had changed sex.
"And not just any woman, check it out." Alice said and her body placed you in front of her mirror, where you saw a really beautiful woman, who, besides her huge breasts, sexy body and long blonde hair, was also looking at you with beautiful blue eyes. "You are the image I have in mind for Aphrodite, the goddess of love. You apparently became the goddess Aphrodite herself."
"But why did I change? I thought the necklace could only make you transform yourself." you said
"Maybe it was because the two of us touched the stone together. As I am wearing the necklace then I decide the transformation, but by playing along with me you could also be transformed." Alice said
"That's cool, this opens up an even wider range of possibilities." you said