你说痴情的人总是又聋又瞎
[nĭ shuō chī qíng de rén zŏng shì yòu lóng yòu xiā]
Translates as 'You say that passionate people are always deaf and blind'. It metaphorically points out that people intensely devoted to others (usually romantically) seem to neglect everything else, making them appear unable to see faults clearly nor hear reason. Passion blinds their discernment.