The weather is cool, what is the next sentence of a cool heart?

It's cold in the sky and cold in the heart. This sentence expresses a feeling of sadness and melancholy. When the weather is cold, my mood is cold, and my thoughts and lovesickness are also cold, because I have lost important people or things, or I am depressed for some reason. This sentence conveys a sad mood, expressing nostalgia for the past and confusion about the future.