Well done.

“But if this is the end of the world, I couldn’t have asked for a better last kiss,” she finally finished, braving a small smile.

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Clark finally found his own smile, bright and full of hope. “It won’t be the last, Lois. I promise.” He watched her for a few seconds longer as those rays of hope filtered into her gaze, and then he did what would have been utterly unthinkable even a few short minutes ago: he vanished right before her very eyes in a maelstrom of swirling color and gusting wind.

“CLARK?!!”

~~*S*~~

Probably not the end…
Just a great ending. Stands on its own.

(although I have to agree with the previous posters that a sequel would probably be a good idea.)