"I think it fits so well for her to be on [the song] because everyone knows what she went through," Charlie told the Metro. "And I think everyone has had those relationships where you're obsessed with that one person, but then you break it off peacefully, but it's changed. You can't talk to them like friends anymore. You can say you want to remain friends, but it's easier said than done. It's heartbreaking. 'We Don't Talk Anymore' is basically the conversation a month after that type of breakup."