我想说出口的我爱你是谎言
[wŏ xiăng shuō chū kŏu de wŏ ài nĭ shì huăng yán]
This translates to 'The love confession I want to say is a lie.' It expresses frustration and unrequited love, suggesting that the user feels unable to be honest about their true emotions or believes that expressing love might not be genuine.