No Sé Tú

"No Sé Tú" (transl. "I Don't Know About You") is a song written and performed by Mexican singer-songwriter Armando Manzanero, released from his studio album, Cariñosamente (1986). A popular bolero song, the lyrics describe the protagonist unable to stop thinking about his lover. Manzanero re-recorded "No Sé Tú" as a duet with Francisco Céspedes on Manzanero's album Duetos (2000). It was listed among Manzanero's best songs by an editor for BBC Mundo.

A cover of the song by Mexican singer Luis Miguel was released as the second single from his eighth studio album, Romance (1991). Miguel co-produced his rendition along with Manzanero, with string arrangements being composed by Bebu Silvetti. The music video for Miguel's cover was directed by Pedro Torres, filmed in Miami, and features the artist performing in front of an orchestra. It won the Eres award for Video of the Year.

Retrospectively, his rendition received favorable reviews from music critics who listed it among the artist's best songs. At the 1993 Lo Nuestro Awards, "No Sé Tú" won Pop Song of the Year while Manzanero received the American Society of Composers, Authors and Publishers (ASCAP) Latin Award for the same category.