Sherlock's sexuality.

Steven Moffat: Sherlock wants sex with women. He just abstains from it.
Benedict Cumberbatch: Sherlock's straight, he just has a bromance with John.
Martin Freeman: Sherlock and John...They're in love.
Mark Gatiss: SHERLOCK'S GAY FOR JOHN. THEY COMPLETE EACH OTHER. FORGET SUBTEXT, LET'S JUST MAKE IT HOMOEROTIC.