Corrina, I agree that Lois has been at least equally responsible for the decline in their marital happiness (in my comments in the last section, I chastised both of them). You are correct, that part of the issue is that Lois's wrongdoing was in the past, whereas we're watching Clark foul things up. However, I would posit that another key issue is the fact Clark's errors are the same ones he's been making for years. He's been with Lois for ten years and yet, he still thinks the way to deal with their issues is to decide what is best for Lois, not consult her, and then make a life altering decision for both of them. Lois is a grownup and "breaking up with her for her own good" is not really the way to show he respects her.
If Clark were unhappy enough to want out of his marriage, he would be well within his rights to get out. Especially given how Lois has treated him in the last year. But honestly, even though she should know how much she's been taking him for granted, he should have told her how it made him feel. Trying to make her want out of their marriage by acting distant and hoping she'll assume she'll be happier with someone else is juvenile and I'd expect Clark would have grown out of it by now.
