Sherlock had to chuckle. "Yeah, we did argue a bit." Mostly it was him, but he wouldn't admit that to John.

"You.... cared for me a lot." He did admit. "And I ... I didn't reciprocate. I didn't know how." He paused for a moment. "But I think I know how to now."

"No. You are not dying. You will never really die. You... are not fully human. That is why you see your eyes change color. Even I don't understand it fully."