你说过你会爱我我说过我会爱你
[nĭ shuō guò nĭ huì ài wŏ wŏ shuō guò wŏ huì ài nĭ]
'Ni shuo guo ni hui ai wo wo shuo guo wo hui ai ni' translates to 'you promised to love me, I also said I would love you', conveying mutual vows of affection and commitment in a romantic relationship.