Specific Virgin!Sherlock fic

[theimprobable1]

I'm looking for a specific fic from the early days of the fandom. Somehow John finds out that Sherlock is a virgin; Sherlock gets very defensive and says something vicious to the effect that at least he's not one of the mindless masses who can't resist their animalistic urges, like John. John, of course, tells him that it's all fine. I seem to remember that in the comments the author said that they didn't consider Sherlock to be asexual in this fic and were considering writing a sequel.

Ring any bells?