Revolu is a colloquial and shortened form of "revolución," meaning "revolution." However, in this context, it's used to mean a "mess," "commotion," or a "wild situation."
In the song, the artist sings, "Porque de verdad yo quiero to' este revolu" (Because I really want all this mess/commotion). It's an enticing word because it suggests a desire for an exciting, perhaps chaotic, but ultimately thrilling experience with their partner, making it memorable and intriguing.
Have you ever gotten a little too close to someone, maybe a friend, and suddenly things got… intense? That's exactly what Izaak, La Perversa, and Michael Flores are singing about in "MENTIRA"! It kicks off with them admitting, "Por intrometido nos pesamos y nos jodimos" [Because we meddled, we weighed ourselves down and we messed up]. They started doing "novio" (boyfriend/girlfriend) things and got completely wrapped up in each other.
But here's the twist: even though they know it might be complicated, they can't deny how good it feels. They're literally saying, "No es mentira / To' lo que hemos hecho no es fantasía" [It's not a lie / Everything we've done isn't fantasy]. Every hug feels special, and everything they do together "se convierte en arte" [turns into art]. It's a fun, flirty, and super honest look at those unexpected connections that start as something casual and quickly turn into something much deeper and harder to walk away from. They're all in, even if they're not quite sure where it's going!