A reproche is a criticism or the act of bringing up someone's past mistakes. While English speakers rarely use the direct translation 'reproach' in casual conversation, reproches is a very common and useful word in Spanish to describe relationship drama.
In the lyrics, the artist asks his partner for a night with "nada de reproches" (no complaints or blaming). He uses this highly expressive word to plead for a temporary truce, capturing the universal desire to forget past mistakes and simply live in the present moment.
Mexican rap group La Santa Grifa strips away any sweet illusions of romance in "Sábanas Blancas" (White Sheets). The track locks into pure, messy obsession, surrounded by drifting smoke clouds and tangled hotel beds. The narrator is wide awake at night, scribbling his lover's name on walls, sketching her in notebooks, and practically begging for one final encounter: "Quiero sentirte por última vez" (I want to feel you for the last time). He knows full well that this hookup will end badly. In fact, he gives her direct permission to wreck him, singing "Rompe mi corazón, anda ven" (Break my heart, go on, come here).
What makes the track stick is how bluntly honest he gets about his own bad habits. Instead of playing the noble hero, he admits he turned into an obsessive chain-smoker and heavy drinker over her, even pleading, "Perdóname por ser tan tóxico" (Forgive me for being so toxic). He admits he chases her "como un perro que va tras su hueso" (like a dog going after its bone). There is no talk of a fairytale ending here; he knows they will part ways in the morning ("cada quien se irá por su propio camino" [everyone will go their own way]). He just wants one hazy, alcohol-soaked evening of physical passion where neither of them has to pretend they are in love.