"Secreto" is a song by Puerto Rican rapper and singer Anuel AA and Colombian singer Karol G. It was released on January 15, 2019, by Universal Music Latino. It reached number one on the Spanish charts, staying there for three weeks, as well as the top 40 in Italy, and number 68 on the US Billboard Hot 100. It was later given a 4× Platinum Latin certification from the RIAA.
The song, called a "pop-reggaeton duet about a torrid but hidden romance", was considered to be about Anuel AA and Karol G's prior rumored but unconfirmed relationship. The track leaked in December 2018, which the producers feared would hinder the song's success and demotivate the singers to promote it, but the song was successful regardless.Billboard described its lyrics as about the couple's "steamy love life in bed".
The music video was also released on YouTube in January 2019, and features romantic scenes of Anuel AA and Karol G. Rolling Stone called it an "entire rom-com's worth of PDA". It achieved close to 100 million views in 10 days.