Playing favorites! When casting the beauties for his sexy new "Jealous" music video, Nick Jonas looked no further than his very own girlfriend. 

The youngest of the Jonas brothers, 22, enlisted his lady, Olivia Culpo, for the latest visuals off of his upcoming self-titled solo album. Culpo, who was Miss Universe 2012 and Miss USA 2012, appears in "Jealous" as an object of Jonas' affection. 

The brunette bombshell, also 22, showed off one of her talents in the clip, playing cello while her toned body was on display in a skimpy bikini. 

"Jealous," which Jonas described as having a "a new-agey Lionel Richie vibe," has the pop star crooning, "I'm getting red in the face / You can call me obsessed / It's not your fault that they hover / I mean no disrespect / It's my right to be hellish / I still get jealous."

Jonas, who confirmed he was in a relationship with Culpo in 2013, told Ryan Seacrest that his new single was inspired by real-life jealousy after a guy was continually checking out his pageant-winning girlfriend. 

"I just got annoyed," he explained to Seacrest. "I finally was like, 'Look, let me just process this a different way than get mad'… go in the studio the next day and write a song."

Culpo has little problem with their relationship serving as musical inspiration. "If there's one person I want to be jealous about me, it's definitely him," she added to Seacrest. 

Watch the cute couple get "Jealous" in the video above!