The Passionate Friends is a 1913 novel by H. G. Wells.

It takes the form of a letter to the his son by Stephen Stratton in which he sets out the story of his relationship with Lady Mary Christian, later Lady Mary Justin, with whom he had had a lifelong, on-again, off-again affair, although they had never married.

Arthur Linfoot wrote that he had ‘Commenced to read “The Passionate Friends”’ on 10 June 1918, shortly after arriving at Pierry, just south of Epernay.