黑脸狗友与背叛
[hēi liăn gŏu yŏu yŭ bèi pàn]
This username could refer to disloyal friendships. In Chinese, 黑脸 (black face) can denote an angry expression or disapproving attitude, while 狗友 means 'dog friends', often used derogatively for close yet untrustworthy companions. Thus, the user likely laments betrayal.