The CW has a segment on its YouTube channel called CWestionator and The Vampire Diaries very own Nina Dobrev is the latest actress to go through it.

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On Wednesday, The CW uploaded Dobrev's CWestionator, which is below.

The actress who portrays Elena Gilbert on the hit supernatural TV show revealed who her favorite costar is among other things.

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Who is Dobrev's favorite costar?

Well, at first she paused to think about her answer before revealing, "Uh, Zach Roerig," which prompted the actor who plays Matt Donovan to shout "Victory" off camera.

Roerig and Dobrev have been acting alongside each other now since The Vampire Diaries began in 2009. Their characters are super close childhood friends and they're even exes on the show so Dobrev and Roerig have a pretty close bond on set.

The entire cast is like family actually.

Roerig is super supportive of Dobrev so it's understandable why he's her favorite costar.

Seven months ago, Roerig and some of the other Vampire Diaries boys went out to see Dobrev's film Let's Be Cops when it first released.

Roerig called Dobrev their "MAIN girl".

 The #TVD boys came out to support our MAIN girl @ninadobrev!! Congrats on your premier!!

A photo posted by Zach Roerig (@zach_roerig) on Aug 12, 2014 at 8:13pm PDT

These costars have shared numerous other photos including each other over the years such as their "breakfast club."

Loving my breakfast club. #fraturday @andibehring @tytheprince11 @ninadobrev A photo posted by Zach Roerig (@zach_roerig) on Jul 27, 2013 at 12:47am PDT

Catch The Vampire Diaries airs on The CW on Thursdays at 8 p.m. ET.

A new episode will air on Mar. 12.