John is so earnest to have Sherlock hear him out, it's a surprise his touch doesn't melt through the door. He will silently watch him, listen and finally... he steps back, opens the door for John and him to talk properly. It's an offer for him to come in, he doesn't need a damn audience listening in right now.

"It's not your baggage, I know about your baggage. I've heard about your sister and you, John." He had all he needed to know about John, thanks to Mycroft, what else he didn't know he could work out on his own.