Sherlock Gets Horny When High

Moriarty drugs Sherlock and sends him on home to his I'm-not-gay flatmate. John fends off Sherlock's persistent advances (apparently Sherlock gets horny when high and has a secret thing for John?) and puts him safely to bed. In the aftermath of Sherlock's embarrassing revelations, John comes to terms with the fact that Sherlock's interest isn't entirely unreciprocated . . .