Keep in mind that this is set early in season 1. Lois and Clark aren't best friends or romantic partners at this point - Lois is just starting to see him as something more than a "hack from Nowheresville". Look at some of the earliest episodes - she really does treat him like crap on many occasions.
Can I feel sad for Lois even though she's done something horrible? Absolutely. Haven't you ever had to stand back and watch a friend or family member make a stupid, stupid mistake? Do you mock them and say "I told you so!" afterwards, or do you sympathize with them as they struggle with the consequences of their actions? I can know in my heart that Lois was absolutely wrong in outing Clark, watch the fallout that results for everyone as a result, and still hope that people can learn from their mistakes.
Have faith in Anti-K. There's a reason she just won a Kerth award.
Susan, who admittedly has some insider knowledge on the story
