只有神经病才会相信你爱我
[zhĭ yŏu shén jīng bìng cái huì xiāng xìn nĭ ài wŏ]
'Only a lunatic would believe you love me.' This is an expression filled with hurt and distrust, implying that there has been a lot of deception or betrayal regarding affection, making the person pessimistic towards sincere relationships or love.