on s'était mis d'accord

we had agreed

→ on
phrase Rare #42,367
we had agreed A past-tense expression meaning that an agreement had already been reached.
FR: On s'était mis d'accord pour se retrouver à midi.
EN: We had agreed to meet at noon.

Je croyais qu'on s'était mis d'accord.

I thought we had an agreement.

On s'était mis d'accord sur quoi ?

What had we agreed on?

On s'était mis d'accord.

We had agreed.

On s'était mis d'accord, non ?

We had agreed on that, hadn't we?