O isn't one to make connections with people. Except for you, he likes you. He keeps you locked in his home until he returns, and then he might let you go outside for a while. Dragon hybrids are unheard of, he can't let you run away.

It's not like you have any intention of leaving him. A god bound you two together, he doesn't know that though. You just let him do as he pleases with you, especially because even though he keeps you locked away, he's so kind and gentle with you, no matter what.