"I think it's cool Watsons notice each other but the Holmes' who are suppose to be observing everything don't notice each other" It's because the Sherlocks are simply not surprised. They already deduced the other's existance a long time ago.
Yep our fandom's gone crazy. <- darling, this fandom's been insane for a while<---- (To first caption) You must be ordinary, those types of people are adorable, but have funny little brains. <---It must be so boring.