Boarding Gate (2007) on Netflix

After discussing his plans for retiring by selling on the shares in his security company to his debtors with his partner, André, aging underworld entrepeneur Miles Rennberg (Michael Madison) is paid a surprise visit at his Paris office by aggressive underworld moll Sandra (Asia Argento). Brazenly taunting him with her sexuality, she bluntly dissects their prior relationship - a nightmarish web of masochism, money, manipulation and dependency, pimping her out to dangerous clients in order to gain both a business advantage and perverse personal thrills.