你并非良人又怎知我深情
[nĭ bìng fēi liáng rén yòu zĕn zhī wŏ shēn qíng]
'If You Are Not the Right One for Me, How Could You Know the Extent of My Love?' indicates unrequited love or misunderstandings. It means if the recipient is not right, they cannot understand the depths of true emotions felt by the speaker.