Like others have said, these were two emotional, sad parts.
I've been thinking of Terry's excellent reply to the previous two parts. He pointed out that with role models like Chris and Jonathan, it is no wonder that Clark feels obliged to be there for Lois's baby. But let's toy with the idea that Chris hadn't been killed, and that it had been him and Martha who raised Clark. Well, the two of them got married just to be able to to take care of Clark, in the same way that Clark married Lois so that he could claim her baby (and save it from Navance). But let's return to Chris. What if he had said to Martha and Clark, after five years, that now he had stayed with them long enough, so now he was leaving?
Martha and Jonathan are right. Clark can't approach his marriage to Lois as something he will have to endure for five years, and then he can leave. If he married Lois for her baby's sake, then he must realize that the child is going to need him for more than five years.
I sympathize with Clark for wallowing, I really do. But it's got to stop now. It almost brought tears to my eyes that Clark would leave Lois alone once again, this time to speak to his parents. Maybe they said something important to him. But I hope that whatever they said, Clark will heed their advice to think more of Lois and work harder on his marriage to her.
Ann