本是凉薄之人何必用情太深不是凉薄之人如何温暖他人
[bĕn shì liáng bó zhī rén hé bì yòng qíng tài shēn bù shì liáng bó zhī rén rú hé wēn nuăn tā rén]
This implies someone who is emotionally detached. They feel that they don't have deep emotions and thus can’t reciprocate the deep affection of others, nor do they know how to make other people feel warm.