I had forgotten
I forgot to tell you.
J'avais oublié que tu avais oublié.
I had forgotten that you had forgotten.
J'avais oublié que je l'avais.
I forgot I had it.
Vous voyez, pour un bref moment fugace, j'avais oublié que j'étais riche.
You see, for one brief fleeting moment, I had forgotten that I was rich.
— Le Loup de Wall Street (2013)