心如明镜却为你蒙心而生
[xīn rú míng jìng què wéi nĭ mĕng xīn ér shēng]
'My heart is clear like a mirror but was clouded because of you' suggests the contrast between knowing better and succumbing to confusion caused by emotions toward someone. It illustrates the struggle with maintaining a rational mind in relationships where emotions take over.