Gloriana's Rachel Reinert and Mike Gossin wrote this song, which is loosely based on a dirtbag ex of Reinert's. She told Billboard magazine: "He cheats on her, lies and they break up. Even though she's devastated, as time goes on, her life turns out awesome and he ends up being a loser. He realizes that she's the one who got away. I really wanted to write a song that a lot of girls could relate to and encourage them to stand up for themselves. The guy treating them like crap is the one who's going to regret having been such a jerk. I think we have all been there at one time or another."
In The Beatles "When I'm 64," Paul McCartney asks a woman if she'll still be there for him when he's 64. In 2006, he got his answer when shortly before his 64th birthday, he and Heather Mills separated.