Welcome to bizarro Mystic Falls.

As was made clear near the end of last night's incredible episode of The Vampire Diaries, Stefan and Damon have essentially switched roles now, with the former lacking any humanity and the latter vowing to protect Elena at all costs. How will Elena deal with the dark side of her ex-boyfriend? Who is now "high on human blood," as Damon states below?

The following promo for "Smells Like Teen Spirit" gives fans some idea.

Elsewhere, look for everyone to start school again next Thursday night, while a new student makes his presence felt in Alaric's history class. Matt will also ask Bonnie for assistance.

Is the show teasing a future relationship between these two? And if so, would you go to Batt for them?

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.