Ponderings - 2

Have you ever wondered why the heart is the symbol of love? Why are people in love constantly making cliched references to the heart? When you are in love, does the Heart really hurt?

To make things clear I'm posting a link. please read it to understand the function of heart and what it does, or in fact what it does not do.
The Human Heart

The brain is the organ that is responsible for all human actions and emotions too. So why exactly is it that people in love constantly use the Heart to feel emotions ?
The only emotion that is not felt by the brain is Love and frankly speaking the reason for that it is because it does require any.