If you loved La clef, try L'étudiante
Un pont entre un film que tu as déjà vu et un que peu de gens ont croisé. Voici ce qu'ils partagent, et ce que le second fait que le premier ne fait pas.
Ce qu'ils partagent
Theysit in Drama / Romance territory. If that's the register that drew you to La clef, the second film will land in a comparable space — through a different lens.
What L'étudiante is
Here's a film that thinks it's a French New Wave. A student prepping for teaching exams meets and is distracted by a musician. Another entry for your "movies that are movies" shelf.
Ask 
ChatGPT
Claude
Grok
Le Chat
Perplexity
for a deeper bridge
ChatGPTClaudeGrokLe ChatPerplexity