我不太好可是配你刚好
[wŏ bù tài hăo kĕ shì pèi nĭ gāng hăo]
Means 'I'm not good enough but I just match you well'. It describes a self-deprecating sentiment, feeling unworthy but surprisingly complementing each other, revealing insecurities yet accepting and loving the flaws that somehow fit perfectly in a relationship or context.