Matt Hires's song "Don't Let Your Heart Grow Cold" is about the ups and downs of life and the importance of not losing hope. The song talks about how the winter will eventually turn into springtime, but during the colder months, it's easy to forget that. The lyrics also touch upon the idea of living multiple lives and finding beauty in each one. The artist reflects on the changes in his own life, including growing older and seeing similarities between himself and his father. He also mentions wanting to love like his mother and always seeing the best in others. The song takes a personal turn when he talks about his marriage and how even though it's not always easy, it's worth fighting for. He also expresses his love for his friends, who are like family to him and reminds listeners to cherish those important relationships. Overall, "Don't Let Your Heart Grow Cold" is a message of hope and a reminder to keep an open heart, even during the tough times. The lyrics encourage listeners to hold onto love and never let it go cold.