dont tu m'as parlé

that you told me about

→ dont
phrase Rare #42,188
that you told me about Used to refer to a person or thing previously mentioned in conversation. The relative pronoun « dont » often corresponds to “that ... about” in English.
FR: Voici le livre dont tu m'as parlé.
EN: Here is the book you told me about.

C'est lui, le salaud dont tu m'as parlé?

Is that the bastard you told me about?

— Reservoir Dogs (1992)

C'est le patron dont tu m'as parlé et qui a été désagréable avec toi?

Is that the boss you told me about who was unpleasant to you?

— PIKU (2015)

Et cette grand-mère dont tu m'as parlé?

And what about that grandmother you told me about?

J'ai parlé à la fille dont tu m'as parlé.

I spoke to the girl you told me about.

C'est le garçon dont tu m'as parlé?

Is this the boy you told me about?