"Fools Rush In" (1940) is a #popularSong. The lyrics were written by #JohnnyMercer with music by #RubeBloom. History of the song according to The Billboard, September 28, 1940 issue, page 34: Four years ago (1936) "Fools Rush In" was known as "Shangrila," composed by Rube Bloom and introduced in one of the production numbers at the Chez Paree, Chicago. Little was heard of it until this past summer when Rube played it for Bregman, Vocco and Conn.
https://www.youtube.com/watch?v=-B7zuxnmqvs