According to JSYK's Lauren Metz Julie Plec Spills the Beans
"One little surprise for the audience that comes near the end of the episode is that we finally learn the real reason that Stefan was in Mystic Falls, and how he came to be in town, and how he came to meet her at the doorway to the boy's bathroom in the high school," the show's executive producer Julie Plec explains. "It's a nice callback to the beginning of their relationship and it's good stuff."
OMG is it Thursday yet?!!!