noun
fickle heart; changing heart; cheating heart
Rare literary term for a heart that easily changes, especially in romantic contexts; implies inconstancy or unfaithfulness.
花心の人は、すぐに気が変わってしまう。
A person with a fickle heart changes their mind quickly.
noun
beautiful heart; pure heart
Rare, poetic sense; likens a beautiful heart to a flower. Not used in modern everyday speech.
彼女の花心は、誰からも愛された。
Her beautiful heart was loved by everyone.