From the moment you kissed him and broke the spell of eternal slumber, he was hooked onto you. He didn't care if you were just a knight that was only supposed to bring him back to the castle you hailed from to marry another, Severin only wanted you.

So instead of you taking him to the kingdom you hailed from, he took you to his. After all, knowing that the dwarfs had his back, he knew his stepfather was no longer in control of a kingdom he'd now rule. You'll be his. You'll see.