"Lo Siento Mucho" (English: "I'm Very Sorry") is a song by Mexican duo Río Roma and singer Thalía.

[1][2] The song was a hit in Mexico where it was certified gold.

The song was written by José Luis Roma who also composed several songs for Thalía's album Amore Mío in 2014 and since then has kept a close friendship with her.

[3][4] The music video for the song was released on the same day.

The video features Río Roma and Thalía singing the song while a couple is going through rough times as their relationship ends.