Oh he was a blusher. That was unexpected and brought an amused smile to her lips. Cas, the Cas of before, hadn't blushed. It was far too human a reaction to anything. She'd had to gauge his emotions from the smallest of tells. There was a certain smile he got, so very rare, and so often turned on her. She wondered if it was a remnant of their time together in the hospital. That had been anything but flirtatious, but it brought a warm feeling to her chest all the same. He'd needed her then. He'd cared about her. She hadn't really realized until then that no one had cared for her in a very long time. She'd thought Lucifer had, but only in the way a god might care about its subjects. Azazel...she'd thought he cared about her like a daughter. But seeing real affection...it showed her just how wrong she'd been.
"You're not doing so bad," she assured, but her tone was teasing. "You remember the last time we talked? Made you a promise then, you remember it?"