From its title, A Pornographic Affair might seem like the kind of film that might appeal to a 13-yr old boy just entering puberty. Its actually a very restrained and beautiful love story. The format of the narrative is in the form of interviews of Him and Her after the affair has ended. There is a mysterious fantasy which brought them together. We never find out, despite the interviewers repeated prodding, what that fantasy was that led Her to advertise and Him to read and respond to the advertisement.
Inevitably, the physical aspects of that fantasy don't matter because the two eventually move on to more conventional forms of sexual activity. Neither knows anything about the other - children, marital status, profession or age. Both are good people and inevitably the affair has to develop into something more. Both are charming and beautiful in their own way. Eventually they begin to like and be infatuated with each other.
Obviously, adult themes are explored in this film, but there is no gratuitous nudity or smut. It has a surprisingly human touch even though the route followed in a conventional relationship is inverted here.