Le Navire Night
Each night in Paris, hundreds of men and women anonymously use telephone lines that date from the German Occupation and are no longer listed to talk to each other, to love each other. These people, shipwrecked lovers, are dying to love, to escape the abyss of solitude.
It's a drama and comedy movie, and has a rating of 6.5 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from France.