Balivernes is a fantastic French word for "nonsense," "rubbish," or "idle talk." It's a bit old-fashioned and literary, which makes it a unique and fun word to add to your vocabulary.
In the song, Gims sings, "je subis tes balivernes" (I endure your nonsense), expressing his frustration and exhaustion with the trivial and meaningless things in the relationship. It's a powerful and elegant way to describe feeling fed up.
Ever been so obsessed with someone that you swore you would tattoo their face on the inside of your eyelids, only to wake up later and wonder who you are even looking at? That dramatic spiral is the core of Gims's track. He describes devotion pushed to the absolute extreme: "J'étais prêt à graver ton image à l'encre noire sous mes paupières" ("I was ready to engrave your image in black ink under my eyelids") so he could see her even in an "éternel sommeil" ("eternal sleep"). But the grand romance soured fast. Once things turned, a single blink changed everything: "J'étais censé t'aimer, mais j'ai vu l'averse / J'ai cligné des yeux, tu n'étais plus la même" ("I was supposed to love you, but I saw the downpour / I blinked, you weren't the same").
Gims gets wonderfully blunt about the reality check that followed. He compares putting a wedding ring on her finger to locking handcuffs on his own wrists: "Quand je t'ai mis la bague au doigt, j'me suis passé les bracelets" ("When I put the ring on your finger, I put handcuffs on myself"). In French slang, "les bracelets" literally means bracelets, but here it clearly means handcuffs. Suddenly, the deep understanding where she only had to raise an eyebrow ("lever le cil") to communicate vanishes under empty nonsense ("balivernes"). He hits a glass ceiling trying to soar, admitting that if he loved her the way she demanded, she would just find him boring anyway ("Tu me trouverais ennuyeux si je t'aimais à ta manière"). The song loops endlessly around the central question—do you love me, do I even love you?—and honestly lands on a bitter "J'sais pas si je t'aime" ("I don't know if I love you").