"No, it's not!" said Jon. He tossed the stone to Zoe, but said "If you don't believe me, ask the stone what the last couple of wishes made on it were."
"You aren't even supposed to know about this..." said Zoe. "But fine. I wish I knew what the last few wishes made on this stone were."
Zoe gasped. "You mean the stone is really yours, and you're me and I'm you?
"No," said Jon, "we're pretty much who we were, just a little different."
"Hm," said Zoe. "I wonder what your boyfriend thinks of it all. I think I'll call him..."