"I know it sounds mad, but when the Doctor became human, he took the alien part of himself and stored it inside the watch." Martha explained. "It's not really a watch, it just looks like a watch."
"And alien means...not from abroad, I take it." Joan said.
"The man you call John Smith...he was born on another world."
"A different species."
"Yeah."
"Then tell me, in this fairy tale...who are you two?"
"Just a friend. I'm not...I mean you haven't got a rival, I'm just his friend." Martha said, looking back at Joan who was looking at Zara. "But he fell in love with another human," She mumbled, only loud enough for Joan to hear. "And he can't admit it, and she can't see it."
