Sobrevivientes literally means "survivors". This word is incredibly powerful in the context of this song, which compares a fast-moving, intense love affair to an accidente (accident).
Jesse & Joy sing, "Y a nuestra velocidad, no hubo sobrevivientes" (And at our speed, there were no survivors). This dramatic line metaphorically describes the complete and total end of the relationship. It paints a vivid picture of a love so intense and fast that it inevitably crashed, leaving neither person's heart, nor the relationship itself, intact.
Mexican pop duo Jesse & Joy team up with Elsa y Elmar for "Accidente", a track that looks back at a sudden, total breakup. The split happens fast: it starts "Por la madrugada / En una llamada" ("In the early morning / On a phone call"), where just a few quiet words make the goodbye crystal clear. The singers admit both people share the blame ("Pesa más la culpa cuando es de los dos" [The guilt weighs heavier when it belongs to both of us]), but there is still plenty of grace left. Instead of being petty, they send a genuine wish on New Year's Eve: "Un amor sincero, aunque no sea yo" ("A sincere love, even if it's not with me").
The central metaphor is as blunt as it gets: "el amor es como un accidente / No lo ves hasta verlo de frente" ("love is like an accident / You don't see it until it's right in front of you"). They were moving way too fast ("Fuimos tan deprisa" [We went so fast]), the laughter stopped, and by the time they crashed, "No hubo sobrevivientes" ("There were no survivors"). It is a tragic realization that simply loving each other was never going to be enough ("querernos no fue suficiente" [loving each other was not enough]) when the whole relationship was running on full speed toward a wall.