has lied
The fact is that he lied.
Dice que no ha mentido nunca, lo cual es mentira.
He says he has never lied, which is a lie.
Tom nunca me ha mentido antes.
Tom has never lied to me before.
Tom te ha mentido.
Tom lied to you.
Creo que ella nunca ha mentido.
I don't think she has ever lied.