钟情一人前提是你
[zhōng qíng yī rén qián tí shì nĭ]
'Zhong Qing Yi Ren Qian Ti Shi Ni' means 'Fall in love with only one person on the premise that it's you'. It expresses dedication in love, implying that their affection has its condition—the beloved must be a certain person, showing exclusiveness or particularity in their romantic feelings.