Good Merlin, was this horrible! I hate to say it but... the main problem? 
 The writing, mainly. There's a mention in the acknowledgments of a 'wonderful and very patient editor - you know who' and now I begin to wonder if this editor was actually You-Know-Who because it was evil not to point out the flaws to the author before the book was published. In a nutshell: it floated from incoherent to plain juvenille all the time. And the repetitions... lord the repetitions! 
 Most of the paranormal universe created in the plot is not substantiated BY THE PLOT itself. One screamingly obvious point: if Athen really can read Ana's mind all the time, how come he doesn't know the amount of lies (by omission or not) she's telling? Of course, I can't tell if this is clarified because, at 67% began a tedious description of the days before Christmas that, at 76% is Thanksgiving and I can't take it anymore. 
 The characters were also underdeveloped. Instead of showing the maturity of the alleged aga, they act as overprotective and/or submissive children all the time, almost as though they regressed in intellect and their past experiences molded them into cowering secretive wimps.