[Though the rapport between the two had taken a turn for the brighter as their chess game progressed, John never forgot that part of this meeting was so he could get his concern about the Moriarty issue off his chest. Seeing an opportunity to remind Sherlock of it, he goes for it.]

I don't want to revive an old argument, especially since I had a good time once that awkward topic withered on the vine. But just remember that just because someone else is different as well, it doesn't mean their company is any good or that you ought to spend time with them if you don't want to.