Sensing he's crossed a line, Balthazar backs off slowly, letting go of Castiel and folding his arms across his chest. His face betrays very little, but it's an insecure pose.

"Or...don't. If I've overstepped my bounds. You're hard to read, Cassi." He looks at the floor, then lets his gaze trail back toward the party guests, without really seeing them. "Maybe it's not a good idea, anyway. This, just this, can be recreation. Just for fun. With you it would mean something."

Possibly too much, in fact.