The song "We Could Go Back" by Jonas Blue is about regret and the desire to go back in time to change past mistakes. The lyrics talk about missed opportunities with a potential love interest and wondering if things would have turned out differently if they had taken a different approach. The narrator reflects on their actions and wishes they could have done things differently in order to win over the person they desire. Despite knowing that time cannot be reversed, they still long for a second chance to make things right. The song ultimately explores the theme of missed chances and the longing for a fresh start.