In 1968 Gainsbourg had written "Je t'aime, moi non plus", an explicitly erotic song which he had recorded with Brigitte Bardot. After the pair's relationship had ended, Bardot begged Gainsbourg not to release the recording as a single and Gainsbourg, the perfect gentleman, respected her wishes. However, in 1969 Jane recorded the notorious song as a duet with Gainsbourg and it appeared on the pair's joint album "Jane Birkin Serge Gainsbourg".