“The fact that Fifty Shades of Grey is a phenomenon at all ‘just shows how mainstream it is, and it’s blasted the door wide open, saying sex is back in a big, big way. Now, sex has moved to the internet, and it’s on Girls, and that’s where people are getting it now. They’re not going to R-rated movies for titillation; you can get it on your phone. But that kind of subject matter is coming back in a big way.”