Lavigne sang the song during the closing ceremony at the 2010 Winter Olympics.
Reference 1: Peak position.
Reference 2: Australian Singles Chart[35], Austrian Singles Chart[36], Japan (Oricon)[37], Sweden Singles Chart[38], UK Singles Chart[39] and US Billboard Hot 100[40].
Source: http://en.wikipedia.org/wiki/My_Happy_Ending
Reference 2: Australian Singles Chart[35], Austrian Singles Chart[36], Japan (Oricon)[37], Sweden Singles Chart[38], UK Singles Chart[39] and US Billboard Hot 100[40].
Source: http://en.wikipedia.org/wiki/My_Happy_Ending
