I ended up reading the whole trilogy. I have to admit, the series surprised me.
When I was growing up (read 14/15) I basically went through all the books in the house which varied from Arthur C. Clarke to Jilly Cooper to some novel involving shibari bondage that I can never remember the name of (don't ask). I think because of that I read the first book with a fairly open mind, maybe more so than I would normally do with a genre that I really don't delve into very often.
I could write a bit about the series, but at the end of the day it boils down to this; they are better written than the Harry Potter novels, they don't really devalue women in any way (only people who have a stale sex life would really say that) and it's in no way as bad as Twilight.
Is it blatantly obvious what the author is trying to do half the time? Yes.
Is the character description a bit weak? Yes.
Is it a unrealistic? Yes.
Are they still a good read? In my opinion, yes.
It's a trashy erotic fiction series, and for the target audience it hits the nail on the head. For the non-target audience e.g. me, it's not to everyone's tastes. I enjoyed them though :V. Might even buy them in paperback as opposed to pirating them.