Starting this book, I was confused and felt like I would never understand what was going on. But eventually it all started to make sense and I really did enjoy the Aliens on Jungryuk. Eve goes through a lot, feeling all the emotions as she goes from denial to acceptance. And her love story with Abraxas (the dragon-man) was so sweet. He is really a big softie (for her only) and I love that about him. I'm really looking forward to reading more!
Just a quick note, this first book in the series mostly follows Eve and Abraxas. While we get a bit of setup for the why-choose, it's mainly M/F at this early stage. 

Phew... be sure to check the content warnings for this one... but if they don't bother you and you're in the mood to be emotionally destroyed, but enjoy it... pick this one up!