As usual, the connections on the Tube system that is Sherlock's mind are out of John's depth, and the only suitable reply John can think of straight away is, "...What?" and a rather offended stare. It's not unusual for Sherlock to make fun of his romantic life and its status and rather spectacular failures, but out of nowhere like that came off as less thoughtless than it normally does and... unusually cruel if John is being honest.

He'd absolutely meant to say it like that, and the intensity of Sherlock's gaze reminds John of the ones he gives to suspects as he unravels their whole history, motive, and methods right in front of them. John decides rather quickly that he does not like that stare when it's being focused on him. He's not sure if Sherlock knows it or not, but there's a certain twinkle in his eyes that he gets when he knows he's won. John didn't even know they were playing.

"I know you don't like my blog post titles but I think you'd be surprised at how many women find them... clever. Funny." At least, that's what they usually told him. Sherlock's words are making him very much doubt that now.