The Sword by Jean Johnson

In an alternate world where magic exists, eight brothers have been exiled due to a Curse. The four sets of twins have been cast out of their homeland and reside on Nightfall Isle. The youngest brother and the strongest mage, Morganen, defies all by rescuing Kelly Doyle from her burning bed... and sets into motion the guidelines of the Curse as dictated by the Seer Draganna. Saber is the oldest of the brothers and therefore reluctant to have any friendly contact with Kelly as he fears the unknown disaster foretold by the Seer.

I had a hard time putting this book down. The romance was hot, the magic interesting, the hero delicous. Now I want the next in the series.