You took me by surprise when you turned around Feeling like I do after all this time Shouldn't be allowed How was I to know What only time could tell Please forgive me, I just thought That you were someone else I really thought that you were someone else Someone I thought I knew so well Gave me every reason to believe I'd found the perfect someone The only one I'd ever need I was wrong All along I just couldn't tell That you were someone else I took you at your word Yeah, I believed in you It was all a masquerade I never could see through You were so sincere You played your part so well You never knew how much it hurt To find you were not yourself I really thought that you were someone else Someone I thought I knew so well Gave me every reason to believe I'd found the perfect someone The only one I'd ever need I was wrong All along I just couldn't tell That you were someone else I really thought that you were someone else Someone I thought I knew so well Gave me every reason to believe I'd found the perfect someone The only one I'd ever need I was wrong All along I just couldn't tell That you were someone else I was wrong All along I just couldn't tell That you were someone else Someone I thought I knew so well Gave me every reason to believe I'd found the perfect someone The only one I'd ever need The only one I'd ever need