What is the origin of the idiom "open one's heart to someone or something" and when to use it?

The origin of the idiom "open one's heart to someone or something" can be traced back to the metaphorical concept of the heart as a symbol of compassion and generosity. The idiom likely developed from the understanding that true acts of assistance and financial support require a genuine and heartfelt commitment to the cause or person in need. This expression is now commonly used in business contexts, such as investments or sponsorships, where individuals or companies express a genuine willingness to financially support a venture or project.