Hmm... I wonder which scene from "My Brother's Keeper" will have Vampire Diaries fans talking tonight. And tomorrow. And well into 2013...

Yes, TV Fanatics, Damon and Elena finally went there. Their Waltz turned into a Horizontal Mambo and and the squeals from Delena fans could be heard for miles and miles. But it wasn't the pinnacle of an romance that many have been waiting for since The Vampire Diaries Season 1.

No, there was a twist far different that any contortion of Elena's while writhing in bed: Caroline and Stefan determined that Elena is sired to Damon.

The Vampire Diaries just can't let this triangle die, can it?

Two weeks ago, I praised Elena and Stefan's split. It felt natural, it made sense in the context of Elena's transition and her heightened feelings for Damon. It was the perfect time to have her commit to the other Salvatore brother and for the show to move on from the back-and-forth of the past few seasons.

Alas. Now we're back there again. Damon is the evil one who cheated to get the girl. Elena didn't really choose him, Stefan will be determined to win her back and break the sire bond... and blah, blah, blah. It may seem like a new tune, but it's really the same old song.

And it feels rather contrived. The Vampire Diaries is a fun, wild ride. It's best not to over-think the cliffhangers and crazy turns and storylines because, come on, this is a show about supernatural beings and, at the end of every hour, I challenge anyone to not claim they were not entertained. That's almost all you can ever ask for from a series.

But there's always a line. And here it comes across like Julie Plec and company simply invented the concept of a vampire being sired to another vampire. Has that ever been touched on before? Is there any reason to think it would make sense in this case, aside from giving the writers a convenient way to drag out the brotherly fight over Elena?

This was lame. It was a cop out. I don't look forward to the ramifications. I'm far more interested in why Hayley is working with Professor Shane and what that duplicitous teacher has in mind. I care a great deal more about Jeremy (never thought I'd write that!) and his nightmares and urges and how the awoken hunter inside of him will affect his relationship with all the vampires in his life.

Heck, I was actually invested in Klaroline this week, as Klaus was at his charming best and I believed for the first time that these two could really be a couple.

In other, disappointing words: at the moment, the show's three main characters are at the center of my least interesting storyline. That's never a good thing.

We'll see where this all goes, of course (next week? To World War II!). Up until this episode, The Vampire Diaries Season 4 had been off to the best start of any season to date. The hunter stuff has been fascinating, Elena's transformation has affected everyone around her, Phoebe Tonkin is downright gorgeous.

But I worry. I'm now afraid the love triangle will overshadow everything else. And who should be the most angry over this siring nonsense? Delena shippers! They have been waiting for years for these two to get together, yet they can't fully enjoy it  - they can't enjoy it at all, really - because apparently it isn't real.

This episode may have represented the best day of Damon's life. But it was my worst experience as a Vampire Diaries fan this season.

What did everyone else think?

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