I think this is about the moral degradation of people around you and the [most likely] subsequent degradation of yourself. When you see betrayal and frigidity on every step, you start losing your trust in people. Eventually, you become cold and empty too ("Put your ear to my chest and hear nothing"). This is the movement from "heartbeat" (normal life with love etc.) to "hell" (alienation and distrust).
I think this is about the moral degradation of people around you and the [most likely] subsequent degradation of yourself. When you see betrayal and frigidity on every step, you start losing your trust in people. Eventually, you become cold and empty too ("Put your ear to my chest and hear nothing"). This is the movement from "heartbeat" (normal life with love etc.) to "hell" (alienation and distrust).