to lie to him, to lie to her, to lie to you (formal)
Mire, no voy a mentirle a un mentiroso.
Look, I'm not going to lie to a liar.
— Temporada de Sangre (2025)
¿Iba a mentirle a la chica sabiendo que su hermano está vivo?
Was he going to lie to the girl, knowing that her brother is alive?
— Cidade dos Homens (2007)
Llegó hasta a mentirle a su mejor amigo con tal de no ir.
He even lied to his best friend to avoid going.
Ella tiene que mentirle a su familia acerca de su novio.
She has to lie to her family about her boyfriend.
No tengo necesidad de mentirle a Tom.
I have no need to lie to Tom.
A usted no necesitaba mentirle porque ya estaba dentro.
You didn't need to lie to him because you were already inside.
— Los renglones torcidos de Dios (2022)