此情应是长相守你若无情我便休
[cĭ qíng yīng shì zhăng xiāng shŏu nĭ ruò wú qíng wŏ biàn xiū]
This expresses dedication and devotion in a relationship. The meaning conveyed is 'if this emotion should last eternally, I will cease if you are indifferent'. It reflects a heart's readiness to stop loving if there’s no mutual affection, but hopes the love lasts long.