Songfacts®:

• Shawn explained the song's meaning during a conversation with performance coach Tom Jackson. "There's a little bit of anger behind it," he said. "It's about your girlfriend cheating on you with your best friend, and now she wants to come back, and you say, 'I want you back, but I just can't get past this.'" (Source: Billboard magazine)
• This song was co-written by Shawn Mendes, Scott Harris, and Joshua Grant. In an interview with Songwriter Universe, Harris explained the process of creating the song. "After 'Life of the Party,' Shawn and I continued writing," he said. "We just clicked. He wanted to keep writing with me and the feeling was mutual. I think we inspire each other in ways we could have never imagined. Aside from writing, we just became really good friends. He would send me voice note ideas he was coming up with on the road and I would send him ideas back. We actually wrote a song called 'The Weight' together entirely on Skype. I eventually joined him on the tour bus to keep the creativity flowing and a lot of those songs became Handwritten."