Wrote and published an open letter to drug addicts in the daily paper Libération: 27th February 1978.
Although being still married to Dennis Berry, she went through a form of marriage to Algerian playboy Ahmed Hasni, but the ceremony had no legal force (31 May 1979).
Gave birth to her son Alexandre Diego Gary on July 17, 1962.
Her second marriage to the 24-years-older Russian novelist Romain Gary was tempestuous and profoundly unhappy due to his obsessive, Svengali-like influence on her. Divorced in 1970 when she became pregnant by her lover Carlos Navarra, she committed suicide in 1979 while he took his own life by gunshot the very next year; however, Gary stated in his suicide note that Jean's suicide had nothing to do with his.
Her involvement with the Black Panther movement yielded the attention of the FBI, that spread the rumor about her pregnancy in 1970 being a child by Raymond Hewt, a Black Panther movement leader. Although Seberg initially claimed that Romain Gary was the father, she confessed that a Revolutionary student named Carlos Navarra was the father of her child. The incident may have contributed to her persistent depression over the years, and her decision to take her life in 1979.