My idea is to re-create the story of the painting. Apples symbolise betrayal, we know that the “cupid” is hidden behind the curtains. I think cupid symbolise ” hidden” love. So clearly the story is about love.
The girl is having a passionate moment with her paramour, she hears someone knocking the door. Her lover jumps through the window and she acts like nothing happened. Next morning, when she wakes up she finds a bowl of apples and a letter from her husband.
SCENE 1: SIN
red lights; haze, close-ups
SCENE 2: LEAVING
blue lights, shadow of “husband” or his face reflection on the window; maybe haze as well
SCENE 3: LETTER
as in the picture;
write a script;
find a window;
Here are so different variations of “girl reading a letter at an open window” for inspiration: