I really dont think they are talking about another person in this video/song. They are talking to who they've become, not to a girl or whatever. "all I wanted was you" like what they wanted to become, but it was "killing" them. Plus, it says "this is who I really am inside" and the video has them, and their alter-egos. So really, Id go with the less obvious choice, and say its about them yelling at who they wanted to be versus who they really are.
I really dont think they are talking about another person in this video/song. They are talking to who they've become, not to a girl or whatever. "all I wanted was you" like what they wanted to become, but it was "killing" them. Plus, it says "this is who I really am inside" and the video has them, and their alter-egos. So really, Id go with the less obvious choice, and say its about them yelling at who they wanted to be versus who they really are.