means
Y tú sabes lo que eso quiere decir.
And you know what that means.
And what does that mean?
He means what he says.
Claro que lo sabe y no me lo quiere decir.
Of course he knows, and he just doesn't want to tell me.
— Hable con ella (2002)
Se llevó a mi tía Natsuko y no me quiere decir dónde está.
He took my aunt Natsuko and won't tell me where she is.
— El chico y la garza (2023)