I swear that
Je te jure que ce que je t'ai dit est vrai.
I swear what I told you is true.
I swear it's true.
Je te jure que je ne savais pas.
I swear I didn't know.
Je te jure que depuis, j'ai pensé à toi chaque jour.
I swear I've thought about you every day since then.
— Amours chiennes (2000)
I swear I don't.
I swear it's true!