24 years is a LONG time to be with anyone鈥 even when you鈥檙e not romantically involved. Believe it or not, that鈥檚 the amount of time one of our favorite 鈥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鈥檛 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鈥檚 nerves.

鈥淚t鈥檚 like a marriage,鈥 Kevin Richardson told the outlet, as the other guys voiced their agreement. 鈥淵ou gotta work at it.鈥 For them, 鈥渨orking at it鈥 occasionally means getting some professional help, to boot. 鈥淲e go to counseling,鈥 Nick Carter embellished. 鈥淲e talk things out.鈥

It鈥檚 a practice Richardson says they鈥檝e been following since the days of their first manager, who told them, 鈥淵ou guys better get into therapy now, 鈥檆ause you鈥檙e gonna need it later.鈥

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. 鈥淚t鈥檚 so funny 鈥檆ause as time goes on, the issues kind of add up,鈥 Carter explains, 鈥渂ut it鈥檚 like a family. We had to learn how to deal with each other.鈥 (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? 鈥淲e talk it out; we box it out,鈥 Richardson interjects.鈥漇ometimes, you got to.鈥

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)