我对你的好终不及她的媚眼
[wŏ duì nĭ de hăo zhōng bù jí tā de mèi yăn]
Translated it reads: 'My kindness to you ultimately doesn't match her allure.'. It depicts disappointment that sincere affection (the kindness given by 'me') can never outweigh the seductive charm ('魅眼'- literally captivating eyes) possessed by some other person (often used metaphorically to refer a love interest or romantic rival.)