Two years after Joan Rivers' tragic death, a new book has shed light on the comedian's dark past.

In Last Girl Before Freeway: The Life, Loves, Losses and Liberation of Joan Rivers, author Leslie Bennetts revealed Joan — who passed away in September 2014 at age 81 — tried to commit suicide twice during her lifetime.

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Joan with her second husband, Edgar, in September 1972.

The Fashion Police star's first suicide attempt occurred in her 20s following a bitter fight with a boyfriend. Joan was allegedly trying to jump out a window when her father arrived and tried "to wrestle her back down the stairs as [she] clung to the railing in her bathrobe, screaming and crying hysterically."

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Years later, Joan — who is mother to one child, daughter Melissa Rivers — thought about ending her life again after her husband Edgar Rosenberg committed suicide in 1987. "[I] decided that for Melissa’s sake I had to keep going," Joan once said of the ordeal.

Click through the gallery to see Joan and Melissa’s sweetest photos together!