Jon had ideas about twins... but then, he didn't really want to commit incest, and he didn't want to force anyone to have sex by magic...
"I wish that the first person that I would be in a relationship under this wish would be identical to me except for her gender and with a female version of my personality, and that this is coincidence and we're not related. I wish we would be tender lovers and I would be as good friends with her as I am with Karyn. I wish we would both remember being Jon, but also both know how the wish changes reality."
The stone flashed... and things flickered around Jon. He was suddenly in bed, with a naked female version of himself.
The stone flashed... and things flickered around Jon. He was suddenly a naked girl, in bed with a duplicate of himself, holding the stone.
The two kissed....
