Adding to her unique situation with Sartre, Beauvoir had intimate liaisons with both women and men.
Some of her more famous relationships included the journalist Jacques Bost, the American author Nelson Algren, and Claude Lanzmann, the maker of the Holocaust documentary, .
Beauvoir's method incorporated various political and ethical dimensions.
In, she developed an existentialist ethics that condemned the “spirit of seriousness” in which people too readily identify with certain abstractions at the expense of individual freedom and responsibility.
In 1931, Beauvoir was appointed to teach in a lycée at Marseilles whereas Sartre's appointment landed him in Le Havre.
In 1932, Beauvoir moved to the Lycée Jeanne d'Arc in Rouen where she taught advanced literature and philosophy classes.
[The British refer to Simone de Beauvoir as "de Beauvoir" and the Americans, as "Beauvoir."] Born in the morning of January 9, 1908, Simone-Ernestine-Lucie-Marie Bertrand de Beauvoir was a precocious and intellectually curious child from the beginning.
Her sister, Hélène (nicknamed "Poupette") was born two years later in 1910 and Beauvoir immediately took to intensely instructing her little sister as a student.
Although never marrying (despite Sartre's proposal in 1931), having children together, or even living in the same home, Sartre and Beauvoir remained intellectual and romantic partners until Sartre's death in 1980.
The liberal intimate arrangement between her and Sartre was extremely progressive for the time and often unfairly tarnished Beauvoir's reputation as a woman intellectual equal to her male counterparts.