Agatha Christie Quote
I was wrong about that young man of yours. A man when he is making up to anybody can be cordial and gallant and full of little attentions and altogether charming. But when a man is really in love he can't help looking like a sheep. Now, whenever that young man looked at you he looked like a sheep. I take back all I said this morning. It is genuine.
Miss Viner. - The Mystery of the Blue Train (1928)