jacklesonmymind:

ephemeral-castiel:

Supernatural 10×03 – Soul Survivor

The combination of exhaustion and sheer relief on Sam’s face is palpable. He’s utterly terrified, but he knows that now that Cas is there, Dean has a fighting chance.

he couldn’t do it.  he couldn’t cut Demon|Dean’s throat.  he just put the knife down slowly knowing.  and surrendering to the fact that he would rather die than kill his brother.  because he couldn’t do it alone again.