[Video]
Cas is special. He's supposed to do that never-ending love and forgiveness thing. [Why else do you think he's stuck around Dean for so long?]
[deep sigh]
Look kid. I don't care if you get angry or flip out or hate on some poor schmuck out on the street. I don't care. But you're either friends. Or you're not.
You make that decision.
And if this... Yu guy is any judge of character, he won't do anything to screw it up again.
[So stop with the late night calls and grumpiness, grumpy. DEAL WITH YOUR SHIT. And don't use Dean as an example, either. It just won't end well.]