Esquemas translates to "schemes," "plans," or "routines." While it can refer to a structured plan, in this context, it speaks to the established order or expectations in one's life.
Sebastián Yatra sings, "Rompe todos mis esquemas" (She breaks all my schemes/routines). This line beautifully conveys how the person he's singing about disrupts his usual way of thinking and living, adding an exciting, unpredictable element to his life. It's a word that captures the transformative power of a captivating individual.
The song opens on a bed that has not cooled yet. "Todavía quedan restos de humedad" (there are still traces of moisture) and "Sus olores llenan ya mi soledad" (her scents already fill my loneliness) tell you everything a whole verse of explanation would tell you badly: she has left, the room has not caught up, and he is lying there reading the shape she left behind. Pablo Milanés wrote this one decades ago and it has been sung by half of Latin America since; Sebastián Yatra takes it almost bare, so each of those small physical details has room to land.
What makes it hurt is that she is not doing anything wrong. "No me pide nada a cambio de lo que da" (she doesn't ask me for anything in exchange for what she gives). "No habla de uniones eternas" (she doesn't speak of eternal unions). "Mas se entrega cual si hubiera" (but she gives herself as if there were) "Solo un día para amar" (just one day to love). She has been honest about what this is from the start, and he is the one quietly wanting more. So the question sits in his mouth unasked: "Todavía no pregunté, ¿Te quedarás?" (I haven't asked yet, will you stay?), and the next line says why, "Temo mucho a la respuesta de un jamás" (I'm very afraid of the answer being never). He would rather have part of her than the whole of an empty life. It is a bleaker thing to admit out loud than it sounds.