爱情没有办法弄虚作假誓言就是对自己的撒谎
[ài qíng méi yŏu bàn fă nòng xū zuò jiă shì yán jiù shì duì zì jĭ de sā huăng]
The translation would be 'love can't lie, vows to others amount to lies to yourself.' Expresses a cynical view about false commitments in relationships, conveying the belief that sincere emotion cannot be faked and oaths are just forms of dishonesty.