According to the book "Clint: A Retrospective" (2012) by Richard Schickel, Clint Eastwood liked the idea of working with William Holden. Schickel states that the film "confounded expectations and alienated many of Eastwood's fans".
When Frank and Breezy go on their movie date, the film they attend is Clint Eastwood's previous picture High Plains Drifter (1973). Eastwood's image is on the poster for the western which can be seen outside the theater. Eastwood can also be seen in the film briefly at a marina.
One of two early 1970s movies directed by Clint Eastwood which involved story-lines with provocative sexuality. This film featured a relationship between a seasoned man and a very young woman whilst Play Misty for Me (1971) featured a one night stand that escalated into violence.
The location setting of flower-child Breezy (Kay Lenz)'s hippie commune was Laurel Canyon. According to Danny Peary's book "Guide for the Film Fanatic" (1987), Clint Eastwood actually liked the counterculture character figure of 'Breezy'.
Danny Peary in his book "Guide for the Film Fanatic" (1987) states "not many people paid attention to the film upon release" whilst Richard Schickel in his book "Clint: A Retrospective" (2012) states that the film in theaters "came and went virtually without notice".
Third billed was actor Roger C. Carmel. Clint Eastwood was later Mayor of Carmel, a small Californian city in Monterey County with Roger's namesake, between 1986-1988. This movie was Roger C. Carmel's only ever film with Eastwood.
Actress Kay Lenz was about nineteen years of age when she appeared in this movie whilst actor William Holden was about fifty-five years. The characters they played were stated as being seventeen and fifty years respectively. As such, the age difference between the characters was thirty-three years but the real age difference between the actors at the time was about thirty-eight years, almost four decades.