"Let me explain," said Jon. "You were Chad. You told me that your girlfriend Julie wished she could reverse any wishes she made using the magic stone... you do remember the magic stone, I hope?"
"Of course I remember it, you showed it to me."
"Then you told me she turned into a dog. She couldn't reverse wishes as a dog, so you turned into her so you could reverse the wishes."
"What are you talking about?"
"You're Chad!" exclaimed Jon. "You just think you're Julie because I turned you into her without you being able to listen. Remember your boyfriend Chad? That's you. You remember being her but it's all fake memories."
"But you're my boyfriend... are you? You've been acting strange."
"Please. Chad, Julie, whatever you call yourself, just try to reverse the wish on the dog."
"All right," said 'Julie'.
Jon handed her the stone and she said "I wish the wish on that dog is reversed."
Instantly the dog's shape got larger, blurred, and turned into a human identical to that of Julie. The fake Julie looked at the real one and said "You're me!"
Jon turned to the new one--the real Julie--and asked "Julie, do you remember everything that happened? Chad?"
"Of course I do," she replied. "I wished to reverse wishes, then I wished to become a dog, and I don't remember anything more."
"But do you remember Chad?" he asked.
"Chad?"
"Your boyfriend. He turned into you..."
"But I don't remember anything like that. I certainly didn't hear anyone make a wish and turn themselves into me. My sister and I have always both been very similar."
"C'mon," said Jon. "Think about it. Even if you're twins, you can't both have the same name! It doesn't make sense that you'd both be named Julie."
"My name isn't Julie, it's June."
"Look, June, it's confusing me too because I don't remember either of you, but you are not June. You're Julie. The one who says she's Julie is Chad, and I'm not her boyfriend, she's your boyfriend. Not your sister. I know..." He reached for the stone, but Julie/Chad wouldn't give it back....