别用你舔过逼的嘴来说爱我
[bié yòng nĭ tiăn guò bī de zuĭ lái shuō ài wŏ]
This is a rather vulgar and explicit expression. It translates roughly to 'Don't say you love me with the mouth that has licked others'. It conveys distrust and disappointment in someone's sincerity when expressing love.