Machine
"I called you a machine."
"What?"
"The last thing I said to you. Before you -...left."
"..."
"We thought - Well, I thought. You knew all along didn't you. I thought Mrs. Hudson was dying. And you didn't care. God, it was you. So I'd go away. Wasn't it."
"John."
"Look nevermind that anyway. I thought she was dying and you didn't care and I called you a machine and you -...I was the only one who never had. Who never would. Who never should have. Your friend, your only friend, and I did the one thing I'd promised myself I'd never do. You never deserved to be treated that way. But everyone did. And you were at the edge - practically already at the edge of the roof - No, remember, it was real for me.
I didn't even see it. Didn't see how much you needed -...someone, anyone. And the last person you were supposed to be able to rely on turned out to be just the same as the rest, and you stepped off that roof. I killed you. No - I said remember, it was real for me. Nobody just goes and - and does that on a whim, Sherlock. You were in a dark enough place for it and I pushed you off that roof. I killed Sherlock Holmes, I killed my - my best friend."
"...Those weren't. The last words you said to me."
"Christ, Sherlock."
"You said I could be clever. Remember?"
"God, I try not to remember that phone call."
"And you said that I was your friend. When you asked to be let through."
"It doesn't count, Sherlock, you were already dead. Christ it doesn't count."
"I'm sorry, John. I am sorry. I didn't -...I didn't realize you would blame yourself."
"Yes, well, you should have, shouldn't you."
"...Always something..."