c'est toi qui me l'as

you were the one who

→ ce
phrase Rare #36,990
you were the one who Used to emphasize that the action was done by you. In the examples, it is followed by a past participle like appris, demandé, dit, or envoyé.
FR: C'est toi qui me l'as dit.
EN: You were the one who told me.

C'est toi qui me l'as appris.

You taught me that.

— Scream 7 (2026)

C'est toi qui me l'as dit.

You told me that.

— La Légende du pianiste sur l'océan (1998)

C'est toi qui me l'as envoyé?

Did you send it to me?

— Harry Potter et la Chambre des secrets (2002)

Tom ne saura jamais que c'est toi qui me l'as dit.

Tom will never know that you were the one who told me.