In the song "Runtuh, Tumbuh" by Reruntuh, the lyrics talk about a relationship that is falling apart but still trying to grow and flourish. The singer expresses feelings of longing and pain, as well as the desire to come back together despite the struggles they have faced. The lyrics also touch on the idea of changing roles within the relationship and the emotional scars that have been left behind. Overall, the song conveys a sense of resilience and hope in the face of adversity, showing that even when things seem to be falling apart, there is still the potential for growth and renewal. It speaks to the universal themes of love, loss, and the inevitable challenges that come with relationships.