都怪我不够爱你都怪我没看好你
[dōu guài wŏ bù gòu ài nĭ dōu guài wŏ méi kàn hăo nĭ]
Translates to 'All because I didn’t love you enough and didn't take good care of you', this shows blame on oneself for not giving proper love and attention to another person leading to regretful consequences.