She was my once in a lifetime Happy ending come true Oh I guess I should have told her But I thought she knew She said I took her for granted Last thing I would do Oh I'll never understand it 'Cause I thought she knew I thought she knew My world revolved around her My love light burns for her alone But she couldn't see the flame Only myself to blame I should have known I should have known A heart full of words left unspoken Now that we're through I'd sell my soul to have this silence broken Oh I thought she knew I thought she knew I thought she knew My world revolved around her My love light burns for her alone But she couldn't see the flame Only myself to blame I should have known I should have known She was my once in a lifetime Happy ending come true Oh I guess I should have told her But I thought she knew I thought she knew I thought she knew I thought she knew I thought she knew I thought she knew Whoa.... Oh I thought that she knew Yeah oooooooo....