it was you who
No fuiste tú quien se comió el pastel que hice, fue tu hermana.
It wasn't you who ate the cake I made, it was your sister.
Fuiste tú quien le rompió la cara, ¿verdad?
You were the one who broke his face, weren't you?
— The Chaser (2008)
Adailton, ¿no fuiste tú quien llamó a Mariá?
Adailton, wasn't it you who called Mariá?
— O Som ao Redor (2012)
Recuerda que fuiste tú quien me pidió la mano.
Remember that it was you who asked me for my hand in marriage.
— Adiós a mi concubina (1993)
Fuiste tú quien empezó a hablar de sus ahorros.
You were the one who started talking about your savings.
— Vivir (1952)
Fuiste tú quien sugirió ver esa película.
You were the one who suggested watching that movie.