The advance of regret can be so gradual that it is impossible to say "yesterday I was happy, today I am not.
E. M. ForsterLucy was suffering from the most grievous wrong which this world has yet discovered: diplomatic advantage had been taken of her sincerity, of her craving for sympathy and love. Such a wrong is not easily forgotten. Never again did she expose herself without due consideration and precaution against rebuff. And such a wrong may react disastrously upon the soul.
E. M. Forster