不是不爱了只是伤得太深
[bù shì bù ài le zhĭ shì shāng dé tài shēn]
'不是不爱了只是伤得太深' implies 'It's not that I don't love anymore, but rather the wounds go so deep,' conveying pain and disappointment in a past relationship. Such nicknames highlight emotional scars and the difficulty moving forward despite trying to hold onto affection.