心情菇凉百毒不侵情心少年早已绝情
[xīn qíng gū liáng băi dú bù qīn qíng xīn shăo nián zăo yĭ jué qíng]
Here 'Girl who is Invincible to All Poisons’ and ‘Heartless Boy’. It depicts the owner as having experienced emotional turmoil leading to callousness against affection and becoming indifferent over time, perhaps as a form of self-protection.