While Dalida was professionally very successful, her private life was marred by a series of failed relationships and personal problems.

In January 1967, she took part in the Sanremo Festival with her new lover, Italian singer, songwriter, and actor Luigi Tenco.

The song he presented was ‘Ciao amore ciao’ (‘Bye Love, Bye’), which he sang together with Dalida but Tenco failed despite Dalida’s performance.

Tenco committed suicide on 27 January 1967, after learning that his song had been eliminated from the final competition.

Tenco was found by Dalida in his hotel room with a bullet wound in his left temple and a note announcing that his gesture was against the jury and public’s choices during the competition.

Prior to Tenco’s suicide, Dalida and he had become engaged. One month later, Dalida attempted to commit suicide by drug overdose at the Prince de Galles hotel in Paris.

She spent five days in a coma and several months convalescing. Dalida returned to the stage the following October.

In December 1967, she became pregnant by a 22-year-old Italian student, Lucio. She had an abortion that left her infertile.

In September 1970, her former husband (1956–1961) Lucien Morisse, with whom she was on good terms, committed suicide, shooting himself in the head.

In April 1975, her close friend, singer Mike Brant leapt to his death from an apartment in Paris.

He was 28. Dalida had contributed to his success in France when he opened concerts for her in 1971 at l’Olympia.

In July 1983, her lover from 1972 to 1981, Richard Chanfray, committed suicide inhaling the exhaust gas of his Renault 5 car.

On the night of 2 May to 3, 1987, Dalida committed suicide by overdosing on barbiturates. She left behind a note which read

La vie m’est insupportable … Pardonnez-moi. (Life is unbearable for me … Forgive me.)