Der Strand von Trouville (1998)

Young Piano teacher Lukas accidentally meets DJ Nathalie, the love of his life. After losing her telephone number, he starts looking for her. Finally, he finds her place and stays with friends of hers while she is abroad. Now Lukas falls in love with Alice, but does not want to admit it. And while his relationship with Alice is in doubt, Nathalie comes back home. Trouble had been breeding all along.