Hello Sebastien and welcome to the forum!
To me, this is a very beautiful piece. I often think of film when making music or listening to music. This romantic music piece could be as background in a film (if I made one). Very nice melody in the beginning, coming again at the end (which is a good idea). And I like the forte in the middle. And in my head, I can see two lovers walking hand in hand to the music in the beginning and at the end, on the blue side (beach). But in the middle something happens…..the minor key…one is left alone for a while…
Well, one could make a fantastic love story/film to this music. This is deep, actually a masterpiece! I enjoyed this. Thank you. Welcome back