She knew that if she said no to his marriage proposal, he’d kill her because she was a witness to the murder he committed. So basically she just wanted to live and agreed
Well, obviously she wouldn’t say no. Her accepting the marriage rather than being killed is obviously the better choice, rather than being an idiot and saying no knowing full well that you could die. And he probably does notice that she is a bit uncomfortable with him, but what can he do??? Ruari ordered him to keep her close, and he can’t break off the marriage because she’s uncomfortable with him. She and he can’t do anything, espescially since it’s the Emperor’s orders.
Oh he knows she is uncomfortable. He think's it is cute. They have shown him grinning over it.
Is it just me or everything is going way way fast? She didn't even try to say "no" when he tried to ask her for marriage. Also, is the guy not noticing the FL being uncomfortable with him? Ugh.