Nina Dobrev Dating Derek Hough, An Item Since August

24-year old Nina Dobrev is moving on from her three-year relationship with Vampire Diaries co-star with Dancing with the Stars mainstay, Derek Hough, according to NY Daily News.

The "Vampires Diaries" starlet is reportedly dating her BFF Julianne Hough's older brother, Derek Hough. "(Nina Dobrev) was hanging a lot with Derek's sister Julianne," a source told US Weekly. The two are said to have been best friends for a long time now. "Then she fell for him."

Another insider told E! News that Dobrev and the "Dancing With the Stars" hunk have been seeing each other since August, while another source added their relationship is "already somewhat serious." Dobrev used her social media this week to show her fans how proud she was of Hough, 28, after he took home the Emmy Award for Outstanding Choreography.

"@Derekhough !!!!!!!! #EMMYWINNER I can't express in 140 characters how unbelievably excited+incredibly proud I am of you. You deserve this." In another photo she posted a picture of the Hough siblings on the red carpet at the show expressing how much she wanted to be there with them. "I wish I wasnt filming so I could have been there to celebrate w/u guys!" she captioned the Emmy snap.

Photos of Dobrev palling around with her rumored beau's sister date back on Julianne's Instagram page to the Met Gala in May. This also so happened to be right around the time Dobrev split from her boyfriend and co-star, Ian Somerhalder, after three years of dating.