Is it some sort of metaphorical thingy that I don't get

Why am I such a hopeless romantic?
Why do fools fall in love?

Oh yes I am the elusive butterfly of love

Love this poem
http://www.internal.org/Sylvia_Plath/Di ... and_PriestFrom that pale mist Ghost swore to priest:
'There sits no higher court
Than man's red heart.'