What is the title of this old french porno?

Language: French
Location: Country Side... Snow covered mountains in the distance (the Alps perhaps)

As I don’t speak French I only remember some of the subtitles in the dialog.
The following is what I can remember:

A man in a red jacket is running from someone... He hides in a cottage where he meets a woman. While she is looking out the window the man caresses her as. As she moans, her mother (sitting just outside the window) asks her something like:
- What are you making noises for?
The woman answers back that she is just admiring the view. And her reasons for making noises is that she was thinking...
- Oh the view is so beautiful. (Snow covered mountains in the distance)
The mother then answers back something like:
- You are so poetic
The woman replies:
- Yes mother….
The woman says something more but I can’t don’t know what I means just remember that she said a few more words.
In the next moment the man that has been caressing her as during this time puts his dick in her as and starts fucking her….

In the final scene of the movie I recall a couple in a car driving somewhere. The man who is driving fakes some engine problems as an excuse to have some fun with the woman. They find a barn where they end up having sex. At the very end they are found out by some of the others who had been hiding behind a pile of hay.

i think it was made some time in the 80's but i'm not sure

thanks in advance for any help