Aguilera wrote the lyrics in memory of her father. On radio station WAKS in Cleveland, Ohio, Aguilera said she was sorry because the last musical thing her father heard from her before he passed away was how she hated him for abusing her mother. She never got the chance to say "I'm sorry, I still love you" before he died. The grief caused so much pain that she wrote a song for him telling how she was sorry for blaming him for everything bad that happened in her parents' relationship.
Suggestion credit: Kelli - Some City, OH
This returned to the UK Top 40 a year after its release as a result of a performance of this song by Hope on the British talent show X Factor. In 2009 the song leapt back into the UK Top 40 again after a performance by X Factor contestant Jamie Archer.