别用吻过她唇的嘴说爱我
[bié yòng wĕn guò tā chún de zuĭ shuō ài wŏ]
Translated as 'Do not speak words of love with a mouth that has kissed her lips.' It's a very emotional phrase expressing a sentiment where one feels deceived or betrayed. It indicates dissatisfaction and pain caused when someone who has been unfaithful claims to still hold affection or love for another person.