What is the origin of the idiom "broken heart" and when to use it?

The exact origin of the phrase "broken heart" is difficult to trace, but it has been used as a metaphor for emotional pain and distress for centuries in various cultural and literary traditions. It represents the deep impact of heartbreak and loss on a person's emotions and well-being. It is commonly used when discussing the end of a romantic relationship, such as a breakup or divorce, where one person feels deeply hurt and devastated. The phrase is also employed to describe feelings of grief and sadness following the loss of a loved one.