"We went out one night and this guy was looking at her for a little too long," he recalled to TV talk show host Wendy Williams. I'm not a jealous person and this was an experience that I was one or two drinks in.I really got into it and then I decided to let me just process this a different way and go into the studio and write this song." PHOTOS: Nick Jonas Shows Off Every Detail of His Sculpted Torso Check out the video below to see Nick dish on how he got his "Hulk-ish" physique.
WATCH: Nick Jonas Raps to Drake, Iggy Azalea Nick was spotted eating solo in NYC last Thursday.The youngest Jo Bro's body might be getting a ton of buzz, but Nick doesn't pay too much attention to the fan fervor surrounding his headline-making abs.PHOTOS: Celebrity Siblings "It feels good to feel healthy, but I'm not sitting there looking in the mirror," he explained.But just last week in an interview with ABC News, Nick said that their relationship was going "good." But the "Chains" singer did admit that being in a long-distance relationship was "tough." "Dealing with that is always an interesting thing, but it's all good," he said."We're both busy, and young, and enjoying life, so, it's going well." Last November, he revealed that his song "Jealous" was actually about Olivia.