Castiel almost laughed. Of course Sam didn't.

"There's an expression, isn't there. The road to Hell is paved with good intentions." He smiled around the mouth of the bottle and drank from it again, waiting for his tongue to grow accustomed to the taste.

He was trying to hide the anger, the bitterness from Dean. Wondered if Dean could see it, he just felt so gutted, surely his thoughts were written all over him.