他太帅我不配她太美我不配
[tā tài shuài wŏ bù pèi tā tài mĕi wŏ bù pèi]
He is Too Handsome, I'm Not Worth It/ She is Too Beautiful, I'm Not Worth It: Expressing self-doubt, insecurity, or humbleness in the face of someone very appealing or excellent, believing oneself isn’t fit to be associated with such superiority in attractiveness.