What is the origin of the idiom "like a house on fire" and when to use it?

The origin of the idiom "like a house on fire" is unclear, but it is believed to have originated in the United States, possibly in the early 20th century. The phrase is mainly used to describe a relationship, interaction, or activity that is happening quickly, enthusiastically, or with great intensity. In other words, it suggests a sense of rapid and positive progress, often used to emphasize the speed and enthusiasm with which something is happening or developing.