Me arrepiento means "I regret it," from the powerful and emotional verb arrepentirse (to regret). It's a key phrase for expressing a change of heart and is central to the song's story.
In this iconic anthem, Selena sings, "Si una vez dije que te amaba, hoy me arrepiento" (If I once said I loved you, today I regret it). This declaration is the song's emotional core, transforming a memory of love into a powerful statement of empowerment and leaving the past behind.
Have you ever looked back on a relationship and thought, "What was I thinking?!" Selena's classic Tejano hit "Si Una Vez" is all about that feeling. She sings about a love where she gave everything, putting herself "dispuesta a tus pies" [willingly at your feet], only to be treated badly in return. She's not sad about it anymore, though. She's mad, and she's completely done.
The chorus is so direct. Selena declares, "Si una vez dije que te amaba, hoy me arrepiento" [If I once said I loved you, today I regret it]. She even calls her past self "loca" [crazy] for ever saying she'd give her life for this person. The song's final word on the matter is simple: "Ese error es cosa de ayer" [That mistake is a thing of yesterday]. It's the perfect song for anyone moving on from a big mistake and refusing to look back.