Billy Joel felt 'hurt' by Sir Elton John's rehab comments Billy Joel has recalled a time when he fell out with Sir Elton John, his long-time showbiz pal. 26 July 2025 Billy Joel felt "really hurt" after Sir Elton John encouraged him to go to rehab. Billy Joel has opened up about his friendship with Sir Elton John The 76-year-old star admits that some "bad blood" developed between himself and Elton, after the Your Song hitmaker publicly suggested that Billy needed to spend some time in rehab.