深执成伤偏爱成痛
[shēn zhí chéng shāng piān ài chéng tòng]
'Deep obsession turns into wounds, while lopsided love leads to pain.' These phrases together imply heartache derived out of strong affection and unreciprocated love. In Chinese culture, the theme of bittersweet romance and enduring hardship can be common themes in poetry or drama.