"Pa' Ti" and "Lonely" (collectively referred to as "Pa' Ti + Lonely") are two songs recorded by American singer Jennifer Lopez and Colombian singer Maluma for the soundtrack of the 2022 film Marry Me. They were released on September 24, 2020, by Sony Music Latin. The collaboration between Lopez and Maluma came about during the COVID-19 lockdowns. "Pa' Ti" was written by the duo alongside Andrea Mangiamarchi "Elena Rose", Jon Leone and Edgar Barrera and produced by the former two. "Lonely" was written by the duo alongside Kevin Mauricio Jiménez Londoño and Bryan Snaider Lezcano Chaverra "Chan El Genio", who also produced the song under stage names Kevin ADG and Chan El Genio "The Rude Boyz". "Pa' Ti" is a midtempo reggaeton song, while "Lonely" features a slower trap beat.
"Pa' Ti" and "Lonely" received positive reviews from music journalists, some of whom highlighted the chemistry between Lopez and Maluma. Commercially, "Pa' Ti" became Lopez's highest chart entry in the United States for a Spanish song since 2014, reaching No. 9 on the Billboard Hot Latin Songs chart. The eight-minute-long, double music video received praise for its cinematic nature, and drew comparisons to the films Chicago and The Wolf of Wall Street.