The Stolen Duet Series by B.B. Reid

Little Mian Ross and the big, bad Knight didn't find their fairytale ending. Together they found war. The Parties: Angeles Knight, Mian Ross. The Order: Angeles Knight orders the liberation of Mian Ross. He’ll tear down their enemies, forsake his throne, and give his life to keep her safe. All Mian must do is forgive his betrayal and put her heart on the line. Again. The Debt: His legacy. The Bandit: Angeles, The Sixth Knight.