24 years is a LONG time to be with anyone… even when you’re not romantically involved. Believe it or not, that’s the amount of time one of our favorite ‘90s boy bands, The Backstreet Boys (did you catch their The Bachelor appearance?), have been a unit, and TBH, it can take its toll.

ROSEMONT, IL - DECEMBER 14: (L-R) Singers A. J. McLean, Nick Carter, Howie D., Kevin Richardson and Brian Littrell of the Backstreet Boys attend 103.5 KISS FM's Jingle Ball 2016 at Allstate Arena on December 14, 2016 in Rosemont, Illinois. (Photo by Tasos Katopodis/Getty Images for iHeart)

The guys won’t be splitting up anytime soon though, thanks to a new Las Vegas residency, so, as they explained to ET, they had to find a way to cope with each other when they inevitably get on one another’s nerves.

“It’s like a marriage,” Kevin Richardson told the outlet, as the other guys voiced their agreement. “You gotta work at it.” For them, “working at it” occasionally means getting some professional help, to boot. “We go to counseling,” Nick Carter embellished. “We talk things out.”

It’s a practice Richardson says they’ve been following since the days of their first manager, who told them, “You guys better get into therapy now, ’cause you’re gonna need it later.”

ROSEMONT, IL - DECEMBER 14: (L-R) Kevin Richardson, Brian Littrell, A.J. McLean, Howie Dorough, and Nick Carter of Backstreet Boys perform onstage during 103.5 KISS FM's Jingle Ball 2016 at Allstate Arena on December 14, 2016 in Rosemont, Illinois. (Photo by Daniel Boczarski/Getty Images for iHeart)

As it turns out, their manager was right. “It’s so funny ’cause as time goes on, the issues kind of add up,” Carter explains, “but it’s like a family. We had to learn how to deal with each other.” (Perhaps he can offer some insight to little bro Aaron, who recently got into a scuffle with his opening act onstage?)

And if all else fails? “We talk it out; we box it out,” Richardson interjects.”Sometimes, you got to.”

Get your tickets for the residency here.

Will you be seeing The Backstreet Boys in their new Vegas home? Tell us over @BritandCo.

(h/t ET, photos via Tasos Kasopodis, Daniel Boczarski, + Denise Truscello/Getty)