Young Lady Chatterly(1977)
Cynthia inherits her aunt's large estate and moves in. She reads her aunt's diary and finds out (and graphically imagines) how she was taught in the ways of love by her gardener in 1901 at the age of 21. She decides to continue the fruitful relationship to the personnel and gets it on with the handsome young gardener herself.
This is the theatrical trailer for the movie.