Fanny Hill by John Clead

Fanny Hill is a poor country girl who is forced by poverty to leave her village home and go to London. Tricked into working in a brothel, she witnesses many sexual encounters that awaken a lust in her. Just in time to keep her virginity intact, she escapes with a man named Charles with whom she has fallen in love. After several months of living together, Charles is sent out of the country unexpectedly by his father, and Fanny is forced to take up a succession of new lovers to survive and must then work to regain her respectability.