Iomedae is too charismatic to actively be doing any mood-killing here but she very notably is not participating.

All that context is not helping him parse where this relationship is right now though. 

"It wasn't really a marriage proposal, though if he thought it would help he might've made it one - presumably not sincerely."

"You are a lovely and remarkable woman and I am sure there is a lich out there that sincerely wants to marry you," Karlenius says.

"All right, enough," says Marit since usually Iomedae would say it and she is apparently not doing that for Reasons. 

Thank you, Marit.

"Did anyone have further business or can I get back to work?"

"I think that's everything."

Does Alfirin want to head back to the demiplane?

If the situation here is sufficiently in hand that they're not needed now.

"I'll Send you if he tries anything and we'll want another Teleportation Circle in the morning but I think we'll be set until then."

Well a morning teleportation circle is cheaper if the morning is a subjective week away. Plane shift.

And he's made enough bad guesses for one day. 

"May I ask you a personal question?"

"Didn't you read my entire life's history in excruciating detail?"

"A page a day, every day, for eight hundred years. I was trying to find the important parts."

"Well in that case, sure, you may ask an unimportant personal question. I might not answer."

"Do the others know about you and Iomedae?"

"Yes."

"And – what is there to know, exactly, about you and Iomedae at the moment?"

"...At the moment? Nothing. We were romantically involved once, when we were both much younger - a couple of weeks. Thirty years ago."

Yeah, right.

"No one's ever accused me of being overly perceptive, but my senses are very enhanced right now – and I don't think you look at each other in couple of weeks thirty years ago sort of way." 

'...Is that a known way people look at each other? She's also - I suppose I still admire her, how could I not? Everyone in the crusade does, half the population of the empire could tell you that she's the most impressive person alive today. I have no explanation for how you think she might have been looking at me."

"She wasn't, that's just the thing. Ordinarily I can't imagine she'd slip like that, but the conversation must have caught her off guard."

"I continue to not have an explanation for that."

It's unsettling to see Alfirin visibly rattled. (He's not sure it would be visible to anyone else, but he's used to his Alfirin and she's much harder to read). 

"I'm sorry to pry. I know you're a very private person. Whatever you two are or aren't doing isn't any of my concern unless it interferes with our project, and I'm sure you wouldn't let it. Only – " 

It's getting harder to avoid the suspicion that Alfirin doesn't realize she's not over Iomedae. Of course, it is Alfirin, which means it's more likely she's choosing to project discomfort for some inscrutable purpose of her own. His Alfirin's still bitter about however their relationship ended, eight hundred years later, but this one doesn't seem bitter – quite the opposite, really. That might be her aim: mask resentment as wistfulness, to reassure the crusade she has no reason to betray them. But it's not as if she goes out of her way to reassure them on that score otherwise, and he really can't think of another explanation. It's possible she really doesn't know. 

" – I have no right to complain if you're not honest with me about it. I just hope you're being honest with yourself."