The priest is the one soldier who intimately knows the people they're about to rape and murder. Who made a point of becoming friends with them, and with Van. And he's still going along with the plan.
Van isn't too bothered by bloodlust and rapelust and raw aggression; most of his friends...
I mean, I try not to date psychopaths, so of course I'd be okay with that. Humans mourn their dead loved ones, it's a whole thing.
My girlfriend might also really love her dad, and maybe she said she'd marry him when she was three years old. Maybe she had the most intense crush on some...