11x01 Out Of The Darkness, Into The Fire & 10x02 Reinchenbach [gifset] - Cas' reaction to hearing that Dean is a demon vs hearing that Dean is freed - Castiel, Sam and Dean Winchester, Supernatural - careful Cas, your "profound bond" is showing!
Sam has heard it twice from two different creatures that there is something wrong with him. It makes me incredibly sad that Sam thinks that whatever is wrong with him is because of who he is. He doesn’t even suspect that it could be some outside force messing with him. Sad Sammy feels are killing me.