Nick Jonas reacts to man leering at girlfriend's bum with new song

A man stares at Olivia Culpo's butt, boyfriend Nick Jonas gets so jealous to the point of frustration, heads to the studio and...there you have it, a new single.

This, for your information, is coming from a guy who claims he's not "a really jealous, intense guy". 

The title of the upcoming single? Jealous.

"I saw someone looking at her ass when we were out one night," Jonas, 21, told E! News.

"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."

The track is set to be released on Sept 7 and the accompanying video, which stars Culpo, 22, - a replay of the actual incident, perhaps? - will debut on Sept 16. 

"I was also in the middle of shooting (the movie) Kingdom where I play an MMA fighter, so I was all pumped up on testosterone feeling like I could beat someone up...thankfully I didn't," he added.

Yes, ladies and gentlemen, Nick Jonas is not a jealous guy at all. Need we cue the eye roll? 

Source: E! Online