我爱你直到你跟别人跑你爱我直到我跟别人好
[wŏ ài nĭ zhí dào nĭ gēn bié rén păo nĭ ài wŏ zhí dào wŏ gēn bié rén hăo]
Translated literally, this is quite complex, meaning 'I love you until you run away with someone else and you love me until I date others'. It seems to express the bitterness about love and relationship instability.