他不帅却是我男神她不美却是我女神
[tā bù shuài què shì wŏ nán shén tā bù mĕi què shì wŏ nǚ shén]
Translated directly as 'He is not handsome but he's my prince; She is not beautiful but she's my goddess', this nickname expresses admiration and love for someone regardless of appearance.