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Olivia Culpo, Nick Jonas, MTV VMA's 2014

Frazer Harrison/Getty Images

Don't go looking for an engagement ring on Nick Jonas' girlfriend Olivia Culpo's finger anytime soon.

"We're just having fun right now," the singer (looking hot in a three-piece Vivienne Westwood suit) told me at the MTV Video Music Awards. "We have plenty of time for that."

And just the other day Nick Jonas admitted during an appearance on E! News that his upcoming single "Jealous" is about real life.

But just how real?

How about the time some dude leered at Culpo?

Nick Jonas, Olivia Culpo

Instagram

"I saw someone looking at her ass when we were out one night," Jonas said. "It really upset me. The next day I went into the studio and wrote the song. So I got something good out of the experience even though in the moment it was frustrating."

Jonas says Culpo was a bit flattered by his outrage. "But I was also in the middle of shooting Kingdom where I play an MMA fighter, so I was all pumped up on testosterone feeling like I could beat someone up," he said. "Thankfully, I didn't."

And yes, Culpo does appear in the video for the song.

"Jealous" is out Sept. 7 followed by the video on Nick's birthday, Sept. 16.

Tune in Tuesday at 8 p.m. for a special VMA and Emmys edition of Fashion Police!