"L'Amour De Ma Vie" is French for "the love of my life."
The title has a double meaning because Billie's ex is not the love of her life, and it's also about how she is the love of her ex's life. This is the seventh track in her recent album.
The song has two parts, with the first talking about Billie Eilish confessing to her ex that she wasn't telling the truth when she said they were the love of her life.
The second part is about Billie taunting her ex and moving on with a girl.
" It isn't asking for a lot for an apology
For making me feel like it'd kill you if I tried to leave
You said you'd never fall in love again because of me
Then you moved on immediately (Bum, bum, bum) ."
Her fans think the song is about her ex Jesse Rutherford, whom she dated between October 2022 and May 2023. (Billie Eilish and Jesse Rutherford were first spotted together in October 2022 and broke up in May 2023. They remain friends. Although she'd said Jesse Rutherford is still one of her favorite people in the world. She also added that she has no plans for a relationship right now. She said she does not find dating interesting).
The song talks about Billie's relationship with her ex, who she feels didn't treat her well, and how her ex moved on to someone else quickly. The song also talks about how Billie's ex loved her more than she loved them, which is why she left the relationship.