oh no that's cute
she's cute
aughhh hugs her forever

Coffee shop regular + Can Interact With Dead Things friendship combo. And he's far less of a hot-headed type than she's used to, so it'd probably end up on the far side of the calm civility scale. Also he's a closet mystery dork, they should bond over their old tastes in books.

Bonus points in that later on in their CR line he could and would casually drop deets on child murderers when they pop up in the Hunter circles.