Engañaste comes from the verb engañar, meaning to deceive, trick, or cheat. It is a direct, accusatory word often used in songs about betrayal to confront someone who broke trust.
Agua Marina sings "Me engañaste" (you cheated on me) throughout the song, naming the betrayal explicitly and using the word to carry the full weight of heartbreak and accusation in a single verb.
Agua Marina's "Porque me engañaste" is a really direct song about feeling betrayed in love. The singer is completely bewildered, asking, "¿Por qué me engañaste?" [Why did you deceive me?]. They gave their all, saying, "me entregué todo por ti" [I gave my all for you], and now they're left wondering why their partner is pulling away without explanation.
It's clear the singer is hurting deeply, describing themselves as "sufriendo como un niño" [suffering like a child] because of this lost love. They believed in a "amistad sincera" [sincere friendship] and a true connection, but it seems their trust was broken. It's a raw expression of confusion and pain after giving everything to someone who then walked away.