Fassbender, 47, had starred opposite Knightley in the 2011 film A Dangerous Method, about the relationship between psychoanalysts Carl Jung (Fassbender) and Sigmund Freud (played by Viggo Mortensen). Knightley, meanwhile, played Jung’s patient-turned-colleague Sabrina Spielrein. The three become embroiled in a love triangle.

Opening up about their raunchy 2011 movie, Michael Fassbender and Keira Knightley have joked about their spanking scenes in their film ‘A Dangerous Method’.