The absence of heat, rather than being in a true inverse of statement, i.e : It is warm - it's hot, instead, i. e : It's cold - there is no warmth, there is absence of heart. This brings to mind peculiar similarities with emotional states, where even sorrow brings a flushed face and tears streaming through eyes.
However, the absence of heat, in the emotional spectrum, is indeed a disastrous precedent. It brings to mind detachment, depression, and a distinct emotion of loss.