原来我只是替代品
        
            [yuán lái wŏ zhĭ shì tì dài pĭn]
        
        
            'Turns out I'm just a substitute.' This indicates heartbreak and realization that one was merely filling a gap in another's heart. It implies pain and disillusionment from discovering oneself is not truly irreplaceable or specifically loved but only stood in for someone else.