I am charming to my friends one day, and forget all about them the next.
 Agatha Christie, The Mysterious Affair at Styles (1920). copy citation

Context

“«You are loyal to your friend. I like you for that.»
«Aren't you my friend too?»
«I am a very bad friend.»
«Why do you say that?»
«Because it is true. I am charming to my friends one day, and forget all about them the next.»
I don't know what impelled me, but I was nettled, and I said foolishly and not in the best of taste: «Yet you seem to be invariably charming to Dr. Bauerstein!»
Instantly I regretted my words.” source

Meaning and analysis

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