Theory:
The coldest objects when left vulnerable to heat melts easily.
Items that are usually kept cool and distant from the harsher temperatures, such as ice, when exposed to heat melts faster and easier as compared to objects either tolerant or have a high-resistance to heat.
Reflection:
The coldest hearts are kept cold to avoid it from melting.
Stand:
I keep my ice in the freezer to keep it from melting.