who wrote how long will i love you

The song "How Long Will I Love You" was originally written by Mike Scott, the founding member and songwriter of the folk rock band The Waterboys. It was released on their 1990 album "Room to Roam." Ellie Goulding later covered the song in 2013, making it widely popular with her version being used in the soundtrack of the film "About Time" and released as a single from her album "Halcyon Days." However, the original writer remains Mike Scott.