Castiel knew he was asking too much; he could only hope that Sam would think more about what John would say than how Dean would feel. "I know it's a lot to ask of you, Sam, but you know how your father would react should he discover this," Casteil pleaded, hand placed over his still-smooth stomach. "He's already convinced Dean to leave me - don't let John make him hate me as well. That I couldn't live with." It was the tears running down Castiel's cheeks that convinced Sam to hold his tongue.