Against the Rest of the World

He’d panicked, because facing the person he cared about most in this world after two years apparently had made him into a fool. And the hurt, anger, and betrayal that crossed John’s face instead was startling. He wasn’t supposed to react like this; he had been fine, hadn’t he? He had moved on.
It was Sherlock who had suffered from this.

Basically, this fic considers what might have happened if John had noticed that Sherlock was injured when he tackled him in the restaurant in "The Empty Hearse." And what if they actually had even the slightest ability to express themselves?