Heart of a Hostage — Christina Hollis

Princess Maia has it all -- including a horrible fiancé chosen for her by the king, and a family bullying her into doing the right thing -- but all she wants is her independence. When she falls into the hands of rebel leader, Mihail, she tastes real freedom for the first time. Mihail is a lone wolf, Public Enemy Number One, and heir to a fierce tradition. A dangerous reputation, a castle full of guilty secrets and now rescuing Maia are all woven into his master plan. He can't lose.

Until his unexpected hostage turns out to be the house guest from hell...