you were lying
Tu mentais, n'est-ce pas ?
You were lying, weren't you?
Je n'ai jamais dit que tu mentais.
I never said you were lying.
J'ai toujours su quand tu mentais.
I always knew when you were lying.
— Gladiator (2000)
Je croyais que tu mentais.
I thought you were lying.
Tu mentais à ta femme.
You were lying to your wife.