你不是真正的快乐我有你我才会快乐
[nĭ bù shì zhēn zhèng de kuài lè wŏ yŏu nĭ wŏ cái huì kuài lè]
Translating to 'You're not truly happy; I will be happy only when I have you,' this expresses a sentiment that true happiness comes from being together with a certain person, implying one feels incomplete without the other's presence.