BeforeThe Jonas Brothersreunited,Nick Jonassays he and his famous siblings had to work through some issues that originally caused the band to go their separate ways — and spent a year “doing therapy” to get back on the same page.

“We literally spent a year basically doing therapy, working through some things, and figuring out what this chapter would look like,” Nick confessed on the CBS evening show. “We’ve had to be really open and honest. There are things in the past that bothered us from time to time, even in our performances that we would do.”

All that came flashing back to Nick when the guys recently performed their first show together.

“It was amazing after the first couple of songs,” he said. “I was so paranoid those first few two or three songs they would be mad at me after this, that I was not able to enjoy it. Then at a certain point I looked at them and thought, ‘This is amazing. I’m going to have the best time ever.’ And we did. A great show.”

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Reuniting wasn’t something Nick, Joe, and Kevin had originally set out to do. The trio was filmingan upcoming Amazon Studios documentaryat the time, which was supposed to be about their childhood, their time in the band, and their lives today.

“It was gonna be a story about where we are today,” Nick explained. “And that was, separate lives doing separate things — Joe with DNCE, and me with my solo stuff.”

“During that time, we started to realize there was a magic that we felt like we were missing,” Nick said. “So the process was basically just, ‘Why don’t we give this another shot?’ ”

All became crystal clear for Nick when the three started playing together again. “We started playing a little music together and realized right away this is where we’re meant to be in our lives at this moment,” Nick said.

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The Jonas Brothersreleased their first new song in nearly six years on Friday, a catchy pop hit called “Sucker” about being head-over-heels in relationships. “I’m a sucker for you/Say the word and I’ll go anywhere blindly/Any road you take you know that you’ll find me,” they sing in the tune.

Of course, all three are in happy relationships themselves. Nick is married to actressPriyanka Chopra, 36; Joe is engaged to actressSophie Turner, 23; and Kevin is married toDanielle Jonas, 32, with whom he has two daughters (Alena Rose, 5, and Valentina Angelina, 2).

All three ladies joined their respective partners in the video for “Sucker,” which also dropped on March 1.

In the clip, the group rock numerous avant-garde costumes as they live out theirAlice in Wonderlandfantasies around a castle (including taking bubble baths in the garden). Each couple gets their chance to shine throughout (and even share some PDA). Eventually, they all come together as a group and pose while an artist paints their portrait.

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Prior to The Jonas Brothers’ official reunion announcement, a source confirmed to PEOPLE that theband would be coming back —revealing Nick, Joe and Kevin had a breakfast meeting at the Polo Lounge at The Beverly Hills Hotel in Los Angeles in early February.

The New Jersey natives first snagged a record deal in 2005 and went on to release four full-length albums:It’s About Time(2006),Jonas Brothers(2007),A Little Bit Longer(2008) andLines, Vines and Trying Times(2009).

They catapulted to fame thanks to a slew of Disney Channel originals — from working withMiley Cyrusfor her massiveHannah Montanaworld tour, to starring in their own seriesJonasand thenCamp Rock(2008) and its 2010 sequel alongsideDemi Lovato.

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But the Bros officially disbanded in 2013, as they were prepping to release their fifth LP.

Kevin successfully got into real estate development after the JoBros as he and his wife Danielle started their family.

source: people.com