Dawn of Dragons Series by Mary Auclair

He is as cold as ice. She is the salvation that will melt his heart. When Endora is faced with her daughter’s terminal illness, she takes the only chance she’s got. She braves the potential risks and signs a mating contract with the Delradon Draekon Lords, intent on using the payment to buy the aliens’ cure to save her daughter’s life. Lord Aldric Darragon rules over his land with an iron fist until one day the only woman who is genetically compatible with him agrees to his offer of mating... moreHe is as cold as ice. She is the salvation that will melt his heart. When Endora is faced with her daughter’s terminal illness, she takes the only chance she’s got. She braves the potential risks and signs a mating contract with the Delradon Draekon Lords, intent on using the payment to buy the aliens’ cure to save her daughter’s life. Lord Aldric Darragon rules over his land with an iron fist until one day the only woman who is genetically compatible with him agrees to his offer of mating. As his all-consuming passion for Endora explodes, an ancient threat looms heavy over humans and Delradons alike. With the lives of everyone he cares about hanging in the balance, Aldric has to fight the demons of his past if he wants to defeat the enemies of the present. Publisher’s Note: This gripping sci-fi alien romance has it all: dragons, passion and tension. It also contains explicit themes and is intended for adults only. less

You are mine, Marielle Jansen. You don't know it yet, but you are mine. With her brother in debt to the biggest crime lord of the slums, Marielle does the only thing she can to save him. She takes the debt on herself. But the only way she can repay it is to be claimed as mate by a Draekon Lord and deliver him an heir. She has no intention of following through with the deal plans to escape as soon as she's received payment... moreYou are mine, Marielle Jansen. You don't know it yet, but you are mine. With her brother in debt to the biggest crime lord of the slums, Marielle does the only thing she can to save him. She takes the debt on herself. But the only way she can repay it is to be claimed as mate by a Draekon Lord and deliver him an heir. She has no intention of following through with the deal plans to escape as soon as she's received payment. But when Lord Aymond Haal is found dead, Marielle is accused of his murder. Salvation comes in the unlikely form of Fedryc, son of Lord Aymond and the new High Lord. In the harsh desert landscape, Marielle becomes Lord Fedryc's mate and finds pleasures she never suspected could exist.   As Marielle navigates the dangerous world of the Draekons and tries to rescue her brother, an enemy lurks in the shadows; a dark force bent on the destruction of all that she holds dear. But can a human woman trust an all-powerful Draekon Lord? And will Lord Fedryc's love be enough to protect her? Publisher's Note: This gripping sci-fi alien romance has it all: dragons, passion and tension. It also contains explicit themes and is intended for adults only. less