Olivia Rodrigo - Happier Lyrics Meaning

This song has to do with her past love with ex-boyfriend (Joshua Bassett) to be happy in his new relationship with Sabrina Carpenter. She sings "We broke up a month ago / Your friends are mine, you know, I know / You've moved on, found someone new”. She sings “Oh, I hope you're happy," She sings on the chorus of the song. "But not like how you were with me / I'm selfish, I know, I can't let you go." She hopes her ex finds "someone great," but no one that's "better" than she is. "I hope you're happy, but don't be happier".