Miéntele is the imperative form of the verb mentir (to lie), combined with the indirect object pronoun le (to him/her). It directly translates to "lie to him/her."
In the context of the song, it's a central and provocative word. The singer is urging his lover to lie to their respective partners to keep their secret affair alive. It's a bold and intriguing command that immediately sets the tone for the song's illicit romance.
Have you ever had a secret so big you'd do anything to protect it? In this passionate cumbia, Antonio Ríos and Noche de Brujas sing about a forbidden love affair. To the outside world, they are just friends, but in private, they share a powerful connection. They believe it's worth it to continue hiding the truth to keep their relationship going.
The song's title, "Miéntele," means "Lie to him/her," and this becomes the central plea. Both singers are in other relationships, mentioning "your husband" (tu marido) and "my wife" (mi mujer). The lyrics are a desperate request to lie at any cost to protect their secret love and ensure their passion never dies out. It's a dramatic story about keeping a hidden romance alive against all odds.