No sé qué literally translates to "I don't know what", but it's a popular phrase used to describe a special, hard-to-define quality—the Spanish equivalent of the French je ne sais quoi.
In the song, the singer feels this indescribable spark when their hands touch for the first time: "Sentí ese no sé qué" (I felt that 'certain something'). It perfectly captures the mysterious feeling of instant attraction, making it a charming and useful phrase to learn.
Have you ever met someone and instantly knew you had to take a shot, even if the odds seemed terrible? That is the exact rush Becky G and Paulo Londra bring in "Cuando Te Besé". The song kicks off with Becky admitting her first thought was "Supe que no eras para mí / Seguro tenías a alguien" ["I knew you weren't for me / Surely you had someone"]. But curiosity won out. A simple street walk and a sudden hand squeeze sparked that mysterious "no sé qué" ["I don't know what" - an indescribable spark], leading straight into a life-changing kiss where she felt she "toqué el cielo" ["touched the sky"].
Paulo steps in and flips his whole attitude upside down. He literally calls himself "Forever alone" [a nod to the internet meme for chronic bachelors] until he spots her. Suddenly, being solo is out the window, and all he cares about is dancing: "No te vayas que se apaga mi ilusión" ["Don't leave or my dream will fade"]. The whole track is a fun, back-and-forth confession about that one magical kiss you would repeat "de nuevo, y de nuevo, y de nuevo" ["again, and again, and again"].
Becky G, born Rebbeca Marie Gomez in 1997 in Inglewood, California, is an American singer and actress of Mexican heritage. She first drew attention with covers posted on YouTube, broke through in 2014 with the single "Shower", and has since recorded mostly in Spanish, mixing pop, reggaeton and regional Mexican music on albums such as "Mala Santa" and "Esquemas".