Sherlock Holmes Fic Finding Community

Hello everyone, i'm looking for a certain genre of story, i've read a few Mycroft/Sherlock/John stories and i've surprisingly enjoyed them, but the problem i have is normally John is all "omg,you two shag each other??for real...hmm ok thats kinda hot!" and dives right in.....now ok John might be able to bend his morals aka, Shooting the cab driver becaue he" wasn't a very nice man" but hes really the most normal of the lot of them and i'm sorry but no matter how in love or enamoured i was with somene if i found out they were shagging thier brother i would have a BIG problem with it....so i'm really after fics where John ISN'T ok with it at first and has the typical repulsed behaviour that in a real life situation most of us would realistically have, i'm not bothered if it does progress to John being ok with it and joining in with the hot sweaty man action, just that there is a realistic period of "This is wrong!!!!!!"...thanks all