[Meg meets his gaze, almost afraid the look in her eyes was teetering towards vulnerable. And she didn't do vulnerable. She tried not to. Demons weren't vulnerable. They didn't show weakness.] Equation. [She repeats softly.] You doin' some algebra, feathers?
[The gently teasing look disappears as Meg glances off to the side, then back to Castiel.] And what is it you feel for me, Cas? [He'd said 'unresolved'. What isn't resolved?]