Castiel rolled his eyes slightly. "You think Sam and Dean have some bad fights, you should have seen Gabriel and Michael when they were angry with each other." Gabriel, he hadn't actually thought of him in centuries. "I love them, they are my brothers, but they really do give me such a headache."
Mostly when they couldn't help going to war. Lucifer, the Morning Star. The baby of the family and the biggest cause of pain in their lives.
"No one ever tries to actively screw up," his tone became faintly amused. "But we all do it, even angels sometimes. I know one day you will and I'm okay with that. Really."
He let out a slight sigh, holding her closely. "You had faith. Faith in my brother, like so many have. I know how persuasive, how beautiful he can be. I can't fault you for that. It wasn't easy, knowing how close he came to taking someone else I love from me. And Sam, he's another issue as well."