Dozens of love letters from singer Edith Piaf to a French cyclist, in which she describes her sexual fantasies and vows to quit drinking for him, fetched €55,000 at an auction held in Paris.

Piaf, almost as famous for her many love affairs and addictions as for her songs, wrote the previously unseen letters to championship cyclist Louis Gerardin in 1951 and 1952, dedicating her song Plus bleu que tes yeux to him. The collection also includes telegrams, a quick note and even a letter from Gerardin's wife, Bichette, to her husband, calling Piaf a "little monster."

"My darling, I want to tell you that no other man has taken me as much as you, and I truly believe I am making love for the first time," Piaf, who died of cancer at the age of 47 in 1963, wrote in one of the letters.

In others, she vows to give up her wild lifestyle for Gerardin, her "Mr My Marvel," and turn into a "docile" woman.

"I made an oath in Church that if you came I would never touch another glass of alcohol in my life," she wrote in the series of letters, which end with her marriage to another man, the singer Jacques Pills. Earlier this year, an equally ardent love letter by Piaf to a Greek actor, telling him "don't let my heart die," sold for €1,500 at an auction in Greece.

In her letters to Gerardin, she mixes that passionate love with sexual desire, praising the cyclist's thighs and buttocks.

"I would like to see you naked on the bed and I would lie down between your beautiful thighs...and well-entwined by the limbs that are normally only used for walking and sitting down," Piaf writes in one of the letters.

"I would like to stay there for a long time without moving and let my dreams come true." Fans of Piaf's husky voice and hits such as La Vie en Rose and Non, je ne regrette rien crowded the auction room at Christie's in the heart of Paris.