"The Sweetest Thing (I've Ever Known)" is a country-pop song written by Otha Young (a/k/a Robert O. Young). Young (who died August 6, 2009) was the long-time musical partner of Juice Newton and wrote the song for her in the mid-1970s.
"The Sweetest thing (I've Ever Known)" was originally recorded and released in 1975 on Juice Newton's debut album, Juice Newton and Silver Spur (RCA), with Silver Spur being the backup band, which consisted of Otha Young, Tom Keeley and other musicians. The 1975 version was not issued as a single, although it was the B-side of two singles. In the meantime, Dottsy recorded a version in 1976 and took it to #86 on the country music charts and used it as the title track to her album The Sweetest Thing.
Newton re-recorded the song on her 1981 album, the career-launching Juice, which was Newton's third solo album and featured three of her five biggest pop hits: "The Sweetest Thing", "Angel of the Morning" and "Queen of Hearts". While "The Sweetest Thing" is often the least-recalled of the three hits from the Juice album, it was arguably the biggest hit at the time.
In early 1982, it reached #1 on the Billboard adult contemporary chart, #1 on the Billboard country chart, and #7 on the Billboard pop chart, where it remained in the Top 40 for eighteen weeks. The single is the only of Juice Newton's to reach the Top 10 on all three charts. On Billboard's year-end Top 40 chart, the song charted at #21 of all the singles of 1982.