The Dragon's Heart Series by M.A. Frick

She wasn’t allowed to fall in love. Least of all with the father of her betrothed. When Nienna, the Dragon’s Heart, sails to Radaan, she knows she’s bound for a marriage to a prince she’s never met. No stranger to duty, she welcomes the alliance as any princess should. But the prince is not what she expected. Kallias, king of Radaan, has spent a lifetime fighting. A treaty ends the war between Radaan and Vellos, but it hinges upon the marriage of his son... moreShe wasn’t allowed to fall in love. Least of all with the father of her betrothed. When Nienna, the Dragon’s Heart, sails to Radaan, she knows she’s bound for a marriage to a prince she’s never met. No stranger to duty, she welcomes the alliance as any princess should. But the prince is not what she expected. Kallias, king of Radaan, has spent a lifetime fighting. A treaty ends the war between Radaan and Vellos, but it hinges upon the marriage of his son. If their betrothal ends, the tentative peace will crumble. Yet Nienna is more than he expected. Forged of fire and steel, her responsibility to kingdom mirrors his own. Nienna needs to feed her people. Kallias needs her dragons. Promises were made. But when duty conflicts with her heart will Nienna be strong enough to resist? Kallias signed a blood oath. Bound by honor and the threat of dragonfire will he be able to stand by and watch her marry someone else? Between Flames and Deceit is a forbidden love, age gap romance. Perfect for lovers of Fourth Wing and Mariana Zapata! less

A mash-up of Fourth Wing and Birthday Girl, readers who love age gap romance but are obsessed with dragons will love the second installment of the Dragon's Heart Trilogy! Nations rise and fall on the backs of kings. And Kallias Sunspear will watch his kingdom burn. Caught in the heat of forbidden passion, Nienna and Kallias broke a Draconian Blood Oath. One that can only be purged in dragonfire. Nienna is plucked away, flown back home as a ruined princess... moreA mash-up of Fourth Wing and Birthday Girl, readers who love age gap romance but are obsessed with dragons will love the second installment of the Dragon's Heart Trilogy! Nations rise and fall on the backs of kings. And Kallias Sunspear will watch his kingdom burn. Caught in the heat of forbidden passion, Nienna and Kallias broke a Draconian Blood Oath. One that can only be purged in dragonfire. Nienna is plucked away, flown back home as a ruined princess. She must face her starving people—the alliance she was born for, destroyed. Through more deceit, she tries to prevent dragons from flying to Radaan and burning the only man she ever cared for. Kallias’ reputation was built on honesty. His people believed in him, and he threw it all away. His whole life had been given to the Mantle of Radaan, his nation. But when faced with the conflict of being true to himself or maintaining a facade to his people, what will he choose? Nienna let herself be dragged away to save him. But Kallias must make a choice. Will he choose his kingdom or himself? You asked for more dragons, and this book delivers! If you want a book that will rip your heart out, stomp on it and purge it with dragonfire--buy your copy today! less