Blume in Love

Blume in Love is a 1973 film written, produced and directed by Paul Mazursky, who also appears in it. It stars George Segal and Susan Anspach. Others in the cast are Kris Kristofferson, Marsha Mason and Shelley Winters.

Wandering around Venice, Italy, where they first honeymooned, Blume wonders what possessed him to betray Nina, a woman he loves, by having sex with his secretary in the bed he and Nina share at home.Nina promptly leaves him and sets about a journey of selfdiscovery, trying new things like yoga and taking up with a manyears her junior, Elmo Kristofferson, an unemployed musician. Blume goes to great lengths to win Nina back, complicated by the fact that he finds Elmo to be quite a nice guy. ........

Source: Wikipedia