His films like 'Jules and Jim' and 'The Woman Next Door' intricately explore the complexities of desire, infidelity, and the tension between romantic ideals and reality within relationships.

His masterworks including 'Scenes from a Marriage' and 'Fanny and Alexander' dissect marriage with unflinching psychological depth, examining betrayal, resentment, and emotional dissolution.

Films like 'Who's Afraid of Virginia Woolf?' and 'Closer' brutally examine marital conflict, infidelity, and the betrayals that emerge when couples confront uncomfortable truths about love and commitment.