but you don't
The girl fits, but you don't.
But you didn't do it.
De acuerdo, abriré, pero usted no entrará.
Okay, I'll open it, but you're not coming in.
— Solaris (1972)
Pero usted no ha cambiado nada, usted nada.
But you haven't changed at all—not a bit.
— Quemado por el sol (1994)
Mi hermana le vio en la ciudad, pero usted no la vio.
My sister saw him in the city, but you didn't see her.