Dean getting closer every time Cas dies.
one thing that amazes me though, is how dean’s reaction to cas’s death is so different in s9 then at any other time. even the s7 one wasn’t as emotional as this, something changed majorly. because the other times? that was a man losing a brother in arms, another time losing a best friend, but the s9 one? that was a man losing his light at the end of the tunnel