Finally, Lois and Superman (because there still is no Clark Kent)have professed their love for each other and Lois is secure in the knowledge that her actions didn't kill the man she loves.
Clark now knows that Lois actually loves him. It has the look of a happily ever after, but then Lois gives him the bad news, and "bam!"... unhappy ending.
How very cruel.
Tank (who thinks that Clark won't want to find a way to come back now)
