Derek Hough continues dating his sister's friends, Nikki Reed continues dating reality stars

Moving on! Nikki Reed recently hooked up with Dancing With the Stars pro Derek Hough, multiple sources confirm exclusively to Us Weekly. The new fling came about just one month after the Twilight alum announced her split from husband Paul McDonald after two years of marriage.

Reed, 25, and Hough, 28, were most recently spotted making out at Rock & Reilly's in L.A. on April 18, an onlooker tells Us. The duo were joined by Hough's DWTS best friend Mark Ballas and costar Cheryl Burke.

"The whole group was drinking and partying. Derek bought shots for Nikki at the bar," the eyewitness tells Us. "There was lots of PDA, Nikki was feeding him, holding hands, and they left together." The onlooker adds: "They didn't seem to care if anyone was watching."

Reed, for her part, has also been taking time out to support Hough on DWTS. A source tells Us the Email star was hanging out with Ballas' girlfriend BC Jean backstage during this week's April 29 episode. (The American Idol stage is right next to the ABC dancing competition.) "She's such a sweet girl! Really down to earth," a source tells Us of Reed. "They are having fun hanging out. It's a good match."

The Scout actress is close to Hough's sister Julianne, which doesn't make the new pairing far-fetched. As Us exclusively reported, the blue-eyed dancer briefly wooed Julianne's close friend, Vampire Diaries star Nina Dobrev, back in September 2013 for six weeks. (The siblings will star in MOVE, a dance tour, this summer.)

Us confirmed back in March that Reed and American Idol alum McDonald, 29, decided to pull the plug on their marriage. The pair first met while the singer was a a contestant on Season 10 of the FOX series, and tied the knot in October 2011. They lived separately for six months before announcing their split, but still plan on working together on their debut album, I'm Not Falling.

The twosome may be having fun, but a second insider close to the actress says it isn't serious. "Nikki isn't currently dating anyone. She is focused on her divorce from Paul and caring for that relationship as well as her latest film projects," the source says. "Nikki and Julianne are good friends, and she has hung out with Derek a few times through her. They're having fun but it's nothing serious."