The heart is in the head.

You are right Plutarch, but so are ten thousand poets and Bobtyoungbalt who know that love transcends mere reality. To the person who is experiencing a "broken heart" the effect is all-comsuming and all-pervasive. There is no positional location. It is, in effect, the universe.
The concept of a "broken heart", while not absolutely cross cultural, has enough Jungian qualities to travel well, witness below...

My heart have been broken, and all my love's in vain.
but the peoples always told me, that a woman is the glory of a man.

You whip her when she needs it, the judge will not let you explain. because he believes in justice and a woman is the glory of a man.

I rather be tired out on the desert, or right out, in the falling rain, than to lose my baby, cause she is, the glory of a man.
Sonny Boy Williamson 1952.