He saved me <<< It was so good to finally hear Sam admit that with that awesome smile on his face. I have so many feels about the travesty that was season 9, but I won't get started on that right now. I'll just say that I loved Sam's talk with Charlie.
I've been working on understanding Sam's perspective after 9x13 "The Purge", and I think this is a big part of it. This is what Dean never saw...The intensity of how much Sam truly hates being possessed, and just how hard he had to fight to be in control again.