Foreign film about age different couple with murder suicide ending

Viewed in Australia on SBS late one night between 2009 and 2013 it was a foreign film with English subtitles. It was a raunchy drama about an older gentlemen and a very young blonde lady having a sexual relationship. The end of the film they decide to commit suicide together on a beach. He shoots her but can’t pull the trigger on himself. Google can’t help me

No idea what language they where speaking and they where lightskin/white people