'The Vampire Diaries' Season 5 premiere: Sexy Delena happiness, Matt's transformation, and 8 more spoilers

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There's nothing better than walking into the office and unexpectedly seeing "The Vampire Diaries" Season 5 premiere episode screener sitting on your desk ... and that's exactly what happened on Friday (Sept. 20). We know you're just as excited as we are about the next chapter of The CW's fan-favorite series, so to help make these next two weeks before it officially premieres just a teeny tiny bit easier, here are 10 juicy spoilers from the dark, fun, and sexy episode that introduces a whole lot of new mythology for the new season:

1. When executive producer Julie Plec promised a lot of Delena goodness in the new season, she wasn't kidding. It seems like the two happy lovebirds haven't been able to keep their hands off each other all summer, losing hours holed up in Damon's bedroom. Though Stelena fans, don't give up all hope: there is one scene that should help to balance out the Delena-heavy episode. 

2. Since Jeremy is living in the Salvatore mansion (thanks to Elena burning down the Gilbert house in Season 4), that means there is plenty of opportunities for awkward sibling moments when he accidentally catches the two vamps in the ... er, act.

3. Though Elena is heading off to Whitmore College for a normal, functioning-vampire college experience with Caroline and Bonnie (or so Elena and Caroline think), don't expect that to affect her and Damon. Sure, long-distance relationships aren't easy, but when you see how these two say goodbye, you certainly won't doubt that they can make it work.

3. Speaking of Bonnie, we've known for a while that she's still dead, and only Jeremy is able to see her. However, she's keeping up the charade that she's alive and well, traveling the world so her friends and father don't worry. But when she doesn't show up to college to be Elena and Caroline's third roommate, expect the questions to start flowing.

4. As for Bonnie's spot in Elena and Caroline's room, obviously the university filled it. This mysterious third roommate actually seems pretty cool considering the weirdo they could have been stuck with -- but Caroline has some very specific (understandable) misgivings about her. 

5. Freshman year of college ... oh, the memories. Elena and Caroline dive right in to traditional college experiences, including a party. But being a vampire -- functioning or not -- in a college setting won't be as easy as they had originally thought.

6. Tyler doesn't make a physical appearance in the premiere, but prepare yourself for one of his tear-jerking voicemails to Caroline. Michael Trevino knows how to steal a scene without even being in it (he's clearly been practicing for his latest project).

7. The token human, Matt, is fresh off his summer galavanting around Europe with Rebekah and a sexy mysterious beauty named Nadia, and his three months abroad with broads transformed him into a confident, happy, self-assured guy who is not the least bit upset about returning to Mystic Falls to work (unlike most guys coming off a summer like his). 

8. Speaking of Nadia, the premiere sets up new mythology that will leave you with a ton of questions as to what her agenda is, and why she needs what she takes from who she takes it from (vague enough for you?).

9. Silas doesn't waste any time pretending to be Stefan (unlike Klaus who enjoyed pretending to be Tyler for as long as he could). He's been spending his summer getting more and more powerful, and the extent of his mind control will shock and terrify you along with the entire town of Mystic Falls, while Stefan has spent the last three months in agony trapped in his underwater prison, debating whether or not to make a huge choice that will have dire consequences.

10. Katherine's had a miserable summer learning how to be a human again ... namely, running from her many enemies ("Do you have any idea what it's like to run in heels? I have blisters!") now that she's weak, slow, and vulnerable. Her troubles will only get much, much worse in the final moments of the premiere when villains' agendas start to become a tiny bit more clear.

How's that for some juicy teasers? And to give you an idea just how jam-packed the episode is, we've barely even scratched the surface of what happens in the premiere.

"The Vampire Diaries" Season 5 premiere, "I Know What You Did Last Summer," airs Thursday, Oct. 3 at 8 p.m. ET on The CW.

Photo/Video credit: The CW