Well, I wasn't going to tell you they were aliens, but the product description did it for me. So now that is out of the way. This is your typical YA book, angsty teens, love/hate relationships, and something forcing the two to work together and work through their mutual attraction. I have heard others relate it to Twilight, and not in a positive fashion. (You can read more about that here) I can see where they are coming from. However, I disagree. The heroine, Katy, has a brain in her head, and is just fine being left alone. She doesn't feel lost without Daemon. These characters all actually have DEPTH and understandable MOTIVATIONS. Not just magically attracted.Daemon, however much I get his motivations, is a giant dick. He is that super sexy, boy next door, with no filter between his brain and his mouth. Well, that's not entirely true, he knows exactly what he is saying and what effect it will have on Katy. But haven't we all had "that guy" that we were attracted to that wasn't exactly the nicest? If you say no, you are lying to yourself. But that's fine with me!Katy doesn't just fawn all over him. She fights back. SHE IS NOT A PUSHOVER. Thank goodness. she gets back at him when and how she is able to. That scene in the cafeteria, I felt for her, and was then laughing at everyone else, even as I continued to feel protective of her. The one thing I didn't understand was her immediate friendship to Dee. She is just too bubbly and needy for me ... but maybe it is me because I wouldn't be friends with her from the get-go; too much energy for me. I am way too lazy for that. All in all, this book gets a solid 4 stars from me, and I will eagerly await the next installment, Onyx.