Listen to How Could You Believe Me When I Said I Love You When You Know I've Been A Liar All My Life? (from "Royal Wedding") online. How Could You Believe Me When I Said I Love You When You Know I've Been A Liar All My Life? (from "Royal Wedding") is an Instrumental language song and is sung by Guy Dearden. How Could You Believe Me When I Said I Love You When You Know I've Been A Liar All My Life? (from "Royal Wedding"), from the album Showstoppers 6 - Musical Theatre Backing Tracks, was released in the year 2021. The duration of the song is 4:11. Download Instrumental songs online from JioSaavn.