Gotham s4e10

— You lied to me? Why?

— Because I was afraid that if I told you the truth, you would go back to being who you were before, The Riddler. And I like who you've become.

— Who's that?

— Ed Nygma.

— You can never return to Gotham. This is good-bye, my friend.

— I don't want to leave you.

— This is what I have to do to protect you. One day, when you are older you will understand.