"Why," said I, glancing up at my companion, "that was surely the bell? Who could come tonight? Some friend of yours, perhaps?"

"Except yourself I have none," he answered.- The Five Orange Pips


Mycroft

Sherlock was really getting to trust him, then. To send someone else to gather the facts was unknown. Always before it had been Sherlock, and Sherlock only who'd collected the facts. He investigated alone. Yet now he was regularly accompanied. The last two times I'd seen Sherlock, John had been with him. My agent reported that they were often together. And Sherlock didn't seem to mind. He might even enjoy John's company, it seemed.

I didn't know what else to call John, and however impossibly obscure it might seem, I had a sneaking suspicion that my brother had a friend.