A story, taken from the classic Zen Flesh, Zen Bones...
There was an old woman in China who had supported a monk for over twenty years. She had built a little hut for him and fed him while he was meditating. Finally she wondered just what progress he had made in all this time.
To find out, she obtained the help of a girl rich in desire. "Go and embrace him", she told her, "and then ask him suddenly: 'What now?'"
The girl called upon the monk and without much ado caressed him, asking what he was going to do about it.
"An old tree grows on a cold rock in Winter", replied the monk somewhat poetically. "Nowhere is there any warmth."
The girl returned an related what he had said.
"To think I fed that fellow for twenty years!" exclaimed the old woman in anger. "He showed no consideration for your need, no disposition to explain your condition. He need not have responded to passion, but at least he should have evidenced some compassion"
She at once went to the hunt of the monk and burned it down.