Article continues below advertisementOK! can reveal Timothée Chalamet is said to be facing mounting pressure to end his relationship with Kylie Jenner after what insiders describe as a "bruising" Oscars setback that has left his career under renewed scrutiny.Chalamet, 30, was widely tipped to win Best Actor for his role in Marty Supreme but lost out to Michael B. Jordan for Sinners at this year's Academy Awards. The defeat followed a highly visible awards campaign and drew attention after host Conan O'Brien mocked Chalamet's earlier remarks about opera and ballet.