The song "Let It Go" by US5 tells the story of a person who is reflecting on a past relationship and the pain of letting go. Richie starts by admitting that he made mistakes and wishes they were undone. Mikel expresses the sadness of being apart for twenty nights and longing to come back home. In the chorus, they explain how the person they loved has moved on and now they are bleeding emotionally and have to let go. Jay reminisces about their relationship, holding onto a picture of the past and remembering when they were more than just friends. Chris questions if the person they loved feels the same way with their new partner and wonders why they are not together. The chorus repeats to emphasize the pain and the need to let go. In the C-Part, the singer expresses confusion and loneliness, unable to understand why they were left alone and unable to sleep at night. Their heart is broken, and they desire for the person to come back into their life. Overall, the song explores themes of heartbreak, longing, and the struggle to accept that a relationship has ended. It portrays the emotional journey of trying to move on from a past love.