Its probably just one of those sites making up crap :roll:
Trust me, these are respectable sites. They're not making things up.
But Stephan just makes shit up, that's just how he is. He jokes around, uses a lot of sarcasm. Unfortunately, from context, you can't tell if it's a joke or not. The "virginal teenage girl" thing makes me lean toward joking, but I'm not sure. He's not an idiot. He knows that his fans know exactly what he writes like. As soon as WH came out 3eb fans were picking through the song and determining which lines were Stephan's. It's obvious. So I'm guessing that he knows better than to assume we'd believe him (remember, he was addressing 3eb fans, not Nessa fans).
Lastly, seeing as it was after they played a show, he might not've been all there, if you know what I mean. So there are lots of possibilities.