tú fuiste quien

you were the one who

→ tú
phrase Rare #33,014
you were the one who Emphasizes that you were the person who did something; it is usually followed by a verb.
SP: Tú fuiste quien organizó la fiesta.
EN: You were the one who organized the party.

¡Que tú fuiste quien la mató!

You’re the one who killed her!

— Nosotros los pobres (1948)

Tú fuiste quien me la enseñó.

You were the one who taught me it.

— Marty Supremo (2025)

Tú fuiste quien eligió hacer eso.

You were the one who chose to do that.

Espera, Teshi, no me digas que tú fuiste quien escribió en mi libreta.

Wait, Teshi, don't tell me you were the one who wrote in my notebook.

— Tu nombre (2016)

Y tú fuiste quien me descubrió en clase.

And you were the one who discovered me in class.

— Los 400 golpes (1959)

Tú fuiste quien les creyó lo del comunismo.

You were the one who made them believe the communism.