“The Vampire Diaries”: This week, we said goodbye to Kol (Nathaniel Buzolic) — and despite a definite theme of resurrection this season, we’re hearing that that’s the very last we’ll see of him in the present day. More bad news? Kol isn’t the only character we’re going to say goodbye to before the next hiatus. Okay, okay, so we have some good news for fans, too: Stefan’s BFF Lexi will appear in another flashback episode this season. And more Lexi is always a good thing.