High Quality Content by WIKIPEDIA articles! "My Happy Ending" is a song written and produced by Avril Lavigne and Butch Walker, and engineered by Russ T. Cobb for Lavigne`s second album, Under My Skin (2004). It was released as the album`s second internationally released single in 2004 and became Lavigne`s fourth most successful single. It peaked higher than "Don`t Tell Me", the album`s first single. In the United Kingdom, it reached the top five; in the United States, it peaked at number nine (staying in No. 9 for 4 weeks), doing better in Mexico where it peaked at number 1. Structurally, the song is written in 4/4 style and has a repeated hook in both the chorus and in the intro and outro.