Dean took a moment to be a little bit of a pig. He knew he was being one, leaning back in his seat as Isabel walked away. Better to look at her ass than Claire's tits, right? "Not if you help me work it off I wont." He called back to her. Teasing. Mostly.
Her tirade didn't go unnoticed. But once he had a bite of pie, he was a little calmed. Isabel's pie had that effect. "Last time I saw you... Was when a bunch of jackasses were trying to use you and your Mom against Cas." And that was the gist of it. She knew what happened. Rory probably did too, there was no point in rehashing.
"So don't take shit out on him, he didn't bring you here." He didn't care what she said to him, but his kids were off limits. "What I have with him doesn't have to make sense to you. It makes sense to me. And I don't have to answer to anyone about it." He pointed his finger at Rory. To be sure that there was no other 'him' that she wouldn't be confused with anyone else.