This was written by Alex North and Hy Zaret for the 1955 film Unchained. Todd Duncan sang the vocals for the film soundtrack.
The wonderful Sam Cooke recorded it for his 1960 album Hits of the 50s, but the twee backing spoils it. Otherwise I would have picked his version as the best.
In 1965 the Righteous Brothers took it to No 4 in America and No 14 in the UK. Soloist Bobby Hatfield changed the tune of the last verse.