
From how I see it, maybe it's because he wasn't really in the original story? Daniel was supposed to be the end-game. And all of Karina's past lovers (except for Andrew) was part of the plot ig. So maybe that's why Aster and Andrew aren't affected by her plot Armour. Because other than the fact she is the main character in the story, I guess everyone else don't care for her. Other than she's just a pretty damsel in distress, and that everyone else is a sheep to rumours.

If you're talking about Karina and Aster, I'm also kinda scared that he doesn't actually like her ever since these recent chapters about them being connected but Andrew being more doted on by the previous king, I'm anxious in thinking that Aster is getting closer to Karina because she "use to be Andrew's property(?)", and thinks it might be a way of getting back at him?? Idk if I'm just being pessimistic. But idk if Aster actually like Karina as much as she likes him

From the spoiler he broke through her spell on their wedding night I think. He wasnt immune to it and that's how he ended up leaving fl (regretting it in the end) was because he was bewitched by titi. He actually doesnt love titi but he needs her to help get the throne.
I'm just posting what inbarely recall from spoiler page so dont take this as gospel.

so he did get immunity by marriage. It seemed like he did like the MC before he was bewitched. Seems like the kind of man who would be offended by being manipulated by that. Though now he can't divorce so he must use Titi and her power to get the throne. He might legit like the MC (though he doesn't deserve her). Granted Equally possible he seduced the MC to get the throne and just hates Titi for fucking up his plan.
Wait why is her husband immune to her shit shouldn't he also be a simp? Also if it doesn't affect him why would he leave a Princess useful for his ascension for that trashy B? Did he just build up a resistance by being married to her?