My Happy Ending Single • Avril Lavigne • 2004

"My Happy Ending" is a song by Canadian singer-songwriter Avril Lavigne, written by herself and Butch Walker for her second studio album, Under My Skin (2004). Structurally, the song is written in 4/4 style and has a repeated hook in both the chorus and in the intro and outro.

"My Happy Ending" was released as the album's second single in June 2004, becoming a top-five hit in Canada, the Czech Republic, and the United Kingdom while reaching the top 10 in seven other countries, including the United States, where it peaked at number nine for four weeks. The Recording Industry Association of America (RIAA) certified the single gold in November 2004.