对伱何止只是牵肠挂肚对伱何止只有日夜如思
[duì nĭ hé zhĭ zhĭ shì qiān cháng guà dù duì nĭ hé zhĭ zhĭ yŏu rì yè rú sī]
Translated as 'My feelings for you are not just heartache and constant thoughts; they go deeper than that.' This indicates deep, perhaps obsessive love and yearning for someone.