I can only agree with MetroRhodes and Shadow. Funny, fluffy stuff.
Lois thinking of a secret ID was wonderful, and her sudden change of mood when she remembers a certain beer night is just soo Lois that I honestly can't imagine any other reaction.
But, more than everything else, I liked her fantasy about life with Superman and her realization that Clark would fit in there even better than Superman.
It's a pity you can't write a sequel to that one, too.