Joe Jonas recently revealed the one perfect word he has to describe his girlfriend, Gigi Hadid. Aside from sharing his perfect description, the singer also gushed about their double date with his girlfriend's sister and beau.

The former Disney star attended the iHeartRadio Music Festival in Las Vegas on Saturday with his new band, DNCE, where he was asked about his girlfriend, E!News reported. E! host Sibley Scoles asked Jonas what comes to his mind when the word “Gigi” is mentioned, to which, the singer replied, "Happiness."

His DNCE co-band member, JinJoo Lee, also remarked, "I think she's an angel."

Jonas and Hadid turned their friendship into romance earlier this year, wherein the two were spotted several times spending time together, as well as other friends such as Taylor Swift, Calvin Harris and more. An E!News source previously said that the model “feels very comfortable with Joe” and that Hadid found it “very easy” to talk with the singer about the things happening in her life.

The source added, "He understands where she is at and they are not in any rush."  Another insider also told E! that Hadid and Jonas “never stopped caring about each other” and that things are going well for the couple.

Meanwhile, Jonas and Hadid are enjoying their time together and even went on double dates with the model’s sister and beau, Bella Hadid and The Weeknd, according to Entertainment Tonight (ET). The former Jonas Brothers band member told ET that the four of them already had “one or two” double dates and even described their group outings as “awesome.”

The singer is also supportive of his girlfriend and even watched Hadid during Tommy Hilfiger's show at last week’s New York Fashion Week. Jonas told ET that “it was great” to see Hadid walk the runway during the Hilfiger’s show. He added, "Just being able to support and see some of my favorite designers, it was great."

In other news, Jonas’ new band, DNCE, recently released their debut single “Cake by the Ocean” and the singer apparently is very excited with his new project.  Jonas told ET that his new music endeavor has been “a secret for a while” and that he was taking his time with the project.  He added, “I was doing some soul searching and this came together perfectly with these guys, and once it was there I was like, 'OK, it's time. This is gonna be great.'"

Jonas’ other DNCE band members includes drummer Jack Lawless, guitarist JinJoo Lee and bass player Cole Whittle.