请相信我会给你幸福我知道你会给我幸福
[qĭng xiāng xìn wŏ huì jĭ nĭ xìng fú wŏ zhī dào nĭ huì jĭ wŏ xìng fú]
Translated as: 'Believe me, I will give you happiness. I know you will bring me happiness too.' This conveys an expression of mutual commitment and belief in providing each other joy and happiness.