Cursed (Book 1, The Watchers Trilogy; Young Adult Paranormal Romance) by S.J. West, http://www.amazon.com/dp/B009TBGTU6/ref=cm_sw_r_pi_dp_U.kBrb1PV866Q
If you haven't read this book, you need to. It is beautiful and luckily it is the first of a trilogy. Trust me on this. If you like really beautiful, interesting, non-cheesey non-Twilightish romance novels, this is perfect for you.