Le Grand Amour
Pierre married Florence, the only daughter of a small industrialist. 15 years later, he is the boss, but his middle-class life worries him a lot. When a new young and lovely secretary comes, he starts dreaming.
Starring Pierre Étaix, Annie Fratellini, Nicole Calfan, Alain Janey, Ketty France, Louis Maïss, Jacqueline Rouillard
It's a comedy and romance movie, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Netherlands.