Why did demi lovato cry in dont forget did she break up with cody linley?

Demi Lovato cried in the song "Don't Forget" because it reflects her emotions and experiences related to heartbreak and the struggles of young love. The song captures the pain of a past relationship and the difficulties of moving on. While she and Cody Linley did date in the past, the song's lyrics are more about the broader themes of love and loss rather than specifically about that relationship.