“Or the next three,” Martha said under her breath, taking another sip of her tea.
Clark:I don't think I can bear having Lois rip me apart 3 more times like that.
“I don’t want to believe that Lois would actually marry Luthor, but the fact that she’s even thinking about it...” Jerome said,
He really should have asked her why she was thinking about it.
returning the topic at hand,
I think that should be "returning to the topic at hand"

there is a way for him to phrase it acceptably tomorrow. OK, maybe Lois means "today" in a slightly broader sense.
“She’s absolutely correct, though. A man should never propose only to counter another man’s suit.”

that no one has told Clark this until now.
“You should have consulted her opinion before offering one of your own.

that he did not do this.