抱歉一直都是我自作多情
[bào qiàn yī zhí dōu shì wŏ zì zuò duō qíng]
This translates as saying 'Sorry, I always misconstrue your affections', meaning this persona has been misinterpreting gestures of another party as more than what was intended. Conveying regretful self-reflection upon realising the situation wasn't reciprocated