BBCSherlock specific Johnlock fic
I am looking for a fic I read some time ago, I believe it was on AO3. I don't remember much about it expect it was excellent. I think that Sherlock was undercover trying to get information out of a man for a case. I think they were sitting outside at a cafe and then I think Sherlock noticed that the man he was talking to was looking at somthing else so Sherlock turned around and it was John walking down the sidewalk. And then the only other thing I remember is the guy saying that John looked like " a bit of rough" that would know how to show a person a good time. And that got Sherlock thinking? Or they might have already been together?? I am really not sure and wow this is so not enough to go on is it? If anybody has the slightest clue of what I am talking about it would be wonderful!!