@LingLing40hrs1:
Probably something to do with him acting like he owns the world and everyone in it?
Also, in that vein, his increasing tendencies towards mild sexual harassment. ("Why can't I stick my arm around your shoulder? Deal with it," is pure assholery.)
Not an unreasonable attitude for an entitled prince, but not an endearing one either.
(I mean about half the comments here have taken a sort of "boys will be boys" or some such attitude here and think it's cute; those are some majorly rose-coloured glasses from where I'm sitting, but within expected ranges of differing opinions.)
I am personally hoping for some character/relationship development on his part other than just her starting to like him for some reason and the relationship working out because of that—but I have no real expectations as such: Authors that like their "domineering" love interests often tend to like what they like, regardless of which bits would be toxic, or so it would seem.