Well, it has a nice storyline but... not my cup of tea. It's like waking up at 6 and forcing yourself to get up. Reading this book feels like this. Not only that it's dragging, I have trouble getting along with the MCs, too lovestruck, selfish, and low self-esteem. Yeah, I know, typical heroes, but this one is in a whole new level. First few chapters will be spent thinking how to save the earth, last chapters theyre still thinking. It's 300+ pages and most of it is spent on Cinder's annoying thoughts about her metal parts : 
 " Cinder tensed, terrified that he would feel the hard metal, even through her gloves, and yet even more afraid to pull away lest he find it suspicious. She mentally urged the robotic limb to go soft, to be pliant, to be human, as she watched Kai lift the hand ..." 
 " Any number of things were sure to go wrong--from tripping on the stairs and flashing the prince a sexy metal thigh.." 
 " If anything, he was probably trying to discern how much of her was metal and silicon." 
 "She tried to cover her metal hand, stupidly, in case Kai had been too blinded by the flash to notice it." 
 So, you probably get the idea. On the plus side, this book has a lot of potential that's why I'm giving it a chance on redemption and currently reading the second sequel (Scarlet).