I can't seem to like Adrian

So, I am currently reading the books for the first time (I am at the end of Last Sacrifice) and I think they are brilliant.

But I really don't like Adrian. The way he treats Rose, the way rules seem to apply to everyone but him, his constant whining and bitching, his temper tantrums and absolute lack of empathy.

Example: Rose just woke up from a coma after being shot and just barely surviving and he has nothing to do than berate her. Asking if she knows this, is aware of that, thinks about all she has done. Well of course not - she just woke up from a days long coma. She has no idea.

He has every right to be upset, and they do need to talk about Roses betrayal of their relationship, but not like this, not at that time, what is he thinking?

He is meant to be twenty-something and constantly acts like a toddler.

Now my question: Am I missing something? Is there character development coming that I haven't got to yet?