Nicholas Hoult's Lex Luthor doesn't know that Superman and Clark Kent are the same person and director James Gunn has explained why.

There’s a theory making the rounds claiming that Lex Luthor actually does know Superman is Clark Kent in Superman , and that he’s just holding onto that knowledge for the perfect moment. It’s a fun idea, but now James Gunn has stepped in to clear things. The conversation kicked off when a fa