Mated to a Drak

As soon as her lips touched his cheek, his body had electric currents zapping through him, his Drak hissed MINE and demanded he take her then and there. And by the look in her eyes she wouldn’t have said no. He groaned.

Why now? Why after nearly 5 and a half centuries does he have to meet his mate? And why does she have to be the future bloody Princess?