If you loved Serenade zu dritt, try Rendezvous nach Ladenschluss
Eine Brücke zwischen einem Film, den du schon gesehen hast, und einem, den kaum jemand kennt. Das teilen sie, und was der zweite macht, was der erste nicht macht.
Was sie teilen
Both films are directed by Ernst Lubitsch, and they both carry the tender mood tag, and they sit in Comedy / Romance territory. If that's the register that drew you to Serenade zu dritt, the second film will land in a comparable space — through a different lens.
tender
What Rendezvous nach Ladenschluss is
It seems love is just a misplaced letter away. Two bickering gift shop employees unknowingly exchange sweet nothings. Naturally, their mutual disdain makes for a charming romance.
Ask 
ChatGPT
Claude
Grok
Le Chat
Perplexity
for a deeper bridge
ChatGPTClaudeGrokLe ChatPerplexity