Original Sin by Lisa Desrochers

Amazon Blub:

Luc Cain was born and raised in Hell, but he isn't feeling as demonic as usual lately... thanks to Frannie Cavanaugh and the unique power she never realized she had. But you can't desert Hell without consequences, and suddenly Frannie and Luc find themselves targeted by the same demons who used to be Luc's allies.

Left with few options, Frannie and Luc accept the protection of Heaven and one of its most powerful angels, Gabe. Unfortunately, Luc isn't the only one affected by Frannie, and it isn't long before Gabe realizes that being around her is too tempting. Rather than risk losing his wings, he leaves Frannie and Luc under the protection of her recently-acquired guardian angel. Which would be fine, but Gabe is barely out the door before an assortment of demons appears - and theyre not leaving without dragging Luc back to Hell with them.

Hell won't give up and Heaven won't give in. Frannie's guardian exercises all the power he has to keep them away, but the demons are willing to hurt anyone close to Frannie in order to get what they want. It will take everything she has and then some to stay out of Hell's grasp. And not everyone will get out of it alive.

NYIA's Teen Reviewer's Opinion:

I can’t wait to tell you how much I loved this book! I give this book 4.5 stars out of 5. The book is exciting, drama filled, and has a nice romantic touch to the whole story. The main character Frannie and Luc make the most adorable couple. Their romance is a play off of the bad boy turned good by the girl. Luc is an ex-demon, so now he lives a human life like Frannie. Frannie has a guardian angel named Matt who used to be her brother. Between these three drama unfolds as they fight temptation so that they can stay protected from the other demons who are trying to get to Frannie. I love how Luc really is concerned for Frannie and they both seem to really love each other. The real twist is that Gabe comes in again to steal the girl. Overall this book has fighting and romance...What more could you want? The only thing I didn't like is that sometimes things got a little corny, but that didn't happen that much. The ending was very exciting and hope there is another book.