"I Wonder Why" is a song by American singer and songwriter Curtis Stigers, released as the first single from his eponymous debut album on August 12, 1991, in the United States. The song reached number four on the Danish and Irish singles charts, number five on the UK Singles Chart, and number nine on the US Billboard Hot 100. It also reached the top 10 in Belgium, Denmark, Germany, the Netherlands, and Norway. Track listings 7-inch single and US cassette single "I Wonder Why" "Nobody Loves You Like I Do" Australian CD single "I Wonder Why" "Nobody Loves You Like I Do" "The Man You're Gonna Fall in Love With" Charts Weekly charts Year-end charts Release history Cover versions Craig David covered the song on his 2010 album Signed Sealed Delivered. References 1991 debut singles 1991 songs Arista Records singles Bertelsmann Music Group singles Curtis Stigers songs Pop ballads Song recordings produced by Glen Ballard Songs written by Glen Ballard