Surprisingly, The Vampire Diaries has yet to wander into Pretty Little Liars territory with a student-teacher relationship. Of course, Matt Davis liked to joke about Alaric’s chemistry with Elena (Nina Dobrev), but thankfully, TVD never went there.  We’re not sure how long we’ll be able to say that, though. Professor Shane (David Alpay) seems pretty interested in Bonnie (Kat Graham). There are a lot of things we don’t know about Shane: Why he hangs out at frat...