我不认为比她差你选她是你眼瞎
[wŏ bù rèn wéi bĭ tā chā nĭ xuăn tā shì nĭ yăn xiā]
This expresses the frustration of someone who doesn't believe they are inferior to another person. It's an assertion that their partner choosing someone else is seen as a bad choice and even irrational ('eye blind' implies making a mistake).