"Oh... yeah. Right," Cas said as he finally moved away from Dean, heading for the office he'd never been into. Never wanted to be into.
Cas had the illusion that this past Dean was stable because, compared to the one was used to, he was. Cas didn't really understand the situation of the Dean beside him as well. It had been too long since Cas himself had experienced it. They'd just have to get to know each other again and that Cas was willing to do.
He stopped outside Sheehan's door and turned to Dean. "You... wanna knock?"