Minor spoiler if you haven't read FOREVER EVIL and JUSTICE LEAGUE #30 and #31.
After the events of FOREVER EVIL and Nightwing's identity being publicly exposed, Lex Luthor has discovered one of the biggest secrets in the DC Universe--he knows Batman's secret identity. Lex appears to now want to do good after helping save the day in FOREVER EVIL, but this is Lex Luthor we're talking about. He approached Bruce Wayne about his discovery.
Because Batman was forced to work with Lex to take on the Crime Syndicate, Lex became a hero. With the world not trusting the Justice League so much after the Syndicate's rampage, Lex pretty much forced his way onto the team. But Lex has always wanted to be the best. He wanted to be better than Superman and be the hero the world needs. The questions is, can be be trusted? Also, can he be trusted knowing Batman's secret identity?
Things are always changing in the New 52 so who can really say? While we can all voice our thoughts and opinions in the comments below, we also have a poll going to make it more official like.
Vote to let us know what you think about Lex's new discovery. You can explain your thoughts further and how you think this will play out in the comments below.