[If Jon couldn't take a statement from Lilith, Crowley wonders how the man got into her nightmares, but he doesn't think she'd respond well to be interrogated on this. If she wants to tell him the rest of it, she will. He has no need to press for more information.]

You cursed him. [He does sound a bit pleased by that, too. Good for her.] I can resist it, at at least a bit. Didn't try too hard on the question he asked 'cause it wasn't that awful to answer, but I'll keep it in mind if he goes after a statement.

[He appreciates the warning, is what he means.]