What is the origin of the idiom "love nest" and when to use it?

The term "love nest" originated in the early 20th century and gained popularity in the mid-20th century. It draws its inspiration from the behavior of birds, particularly the way they build nests for mating and raising their young. The concept of a "love nest" symbolizes a place where a couple can create a cozy, intimate, and secure environment for their romantic relationship. It evokes the image of a comfortable space where love and affection can flourish. It is often used to describe a couple's home or a special location where they create a romantic atmosphere. It conveys a sense of warmth, intimacy, and affection associated with a romantic relationship.