The Doctor watches Rory when he thinks Rory isn't looking.

Rory knows there's something wrong because the Doctor is supposed to be watching Amy. Everyone watches Amy. Amy is everything Rory had ever thought a beautiful woman should be.

Sometimes, in the middle of the night he'll wakeup alone and something will whisper in his mind that this is reality, that Amy wasn't his wife. That she might not even be real.

But then he hears a noise and she steps out from the bathroom or the wardrobe or in from the hallway and crawls back into bed with him.

The Doctor watches Rory because he knows what Rory isn't ready to hear, what he knew from the first moment he saw Amelia Pond; even when his head was spinning from regeneration.

Amy isn't real.

She's a fairytale creature kept alive by the heart, soul and imagination of a lonely little boy.

She's Rory in every way that matters, a not quite parasitic psychic twin and she knows it.

She asks him not to tell.

If he tells than she'll have to go away and who will take care of Rory then?