不是不爱了而是真的累了
[bù shì bù ài le ér shì zhēn de lĕi le]
'It's Not That I Don't Love You, But I'm Truly Tired' explains why someone may be stepping back or giving up on a relationship. While still caring deeply for another, prolonged conflict or issues lead them to realize that staying in it might no longer serve the greater good.