I don't lack theoretical knowledge
"What if you break up with me after we get married?" He grimaces at her. His tone is whiny but sharp. "You left me because of someone else. Then again, you have a habit of sacrificing yourself for other people. What would I do without you?"
The Dark God has been traumatized.
"..." She only died once. For him. And well, to prevent war and save the world. When did she sacrifice herself?
"Aren't you supposed to say something to me?" Adira pinches the swollen bud, watching her flinch. She trembles when he bends down his head and brushes his lips on her bud; and then, he lifts his head and looks at her with a mischievous glint in his eyes. "Are you ever going to say that you will leave me?"
Chaining her with marriage or children? It might work on other women -- not her. He is terrified of hearing that she might leave him again. Even jokes on that matter are not accepted.