我以为你都懂所以没有说痛
[wŏ yĭ wéi nĭ dōu dŏng suŏ yĭ méi yŏu shuō tòng]
Translated as 'I thought you understood everything, so I didn’t mention my pain', which expresses silent suffering and misunderstandings. There’s an expectation or hope in the beginning that a significant other understands them thoroughly thus feeling the emotional/mental pain isn’t necessary to be vocalized, and then they may find themselves hurting in silence when those assumptions don't come true.