"A Public Affair" is a song recorded by American singer Jessica Simpson. It was co-written by Simpson and produced by Lester Mendez, for Simpson's fourth studio album of the same title. It was released as the album's first single (second overall) on June 29, 2006 by Epic Records. The synthpop track samples the composition of "Ain't No Mountain High Enough" by Diana Ross and interpolates the Madonna classic "Holiday". It was also compared to Janet Jackson. Lyrically, the song speaks about having fun with friends.