The World of Ludovic (1993)

Ludovic, a young boy neglected by his artsy parents, falls in love with Sophie, the daughter of a piano teacher. They meet in secret places in the city. Not long after Sophie's father finds them naked together in her room, Ludovic is sent away to spend time with his grandparents. Sophie runs away from home to join him, and they hide along the seashore and in abandoned buildings. After they are found, their parents try to keep them separate, but they both fall into deep depressions.