Superman #226 (2006)

Superman of New Earth fights with the Superman of Earth-Two in the skies of Metropolis above the Daily Star on Earth-Two. With each crushing blow, each man lives the life of the other. Kal-El sees the events of World War II through Kal-L's eyes, and decides to act. He vows to end the war, and heads off to confront Hitler, only to be stopped by the Spear of Destiny. Later, we see him standing in front of a concentration camp, vowing that this will never happen again. Later, we see Kal-El on a date with the Lois Lane of Earth Two, where he says "This is not my life, but if she's here, I can make it mine." Kal-El notes that on Earth-Two, everything is simple. After Lois informs him that the JSA is on the stand in front of H.U.A.C., he confronts them and reveals his identity. Meanwhile, on New Earth, Lois Lane stands on the roof of the Daily Planet building. She can see the corona of Earth-Two high in the sky. She whispers words of guidance for Superman, knowing that he cannot hear her. Finally she says, "I love you", as we see different versions of Lois that existed throughout the Multiverse.