Photo: Charles Sykes/Bravo/NBCU Photo Bank/NBCUniversal via Getty

Kim Zolciak-Biermannand her estranged husbandKroy Biermannare adjusting to a new normal while living under the same roof.
A source exclusively tells PEOPLE that the pair are “still living in the same house” after news broke on Monday thatThe Real Housewives of Atlantastar, 44, filed for divorce after 12 years of marriage.
“It’s easier for the kids for now,” the source shares. “But also, neither wants to move, and it will obviously get complicated.”
The couple share fourchildren: 9-year-old twinsKaia Rose and Kane Ren, plus sonsKash Kade, 10, andKroy Jagger, 11. Biermann also legally adopted Zolciak-Biermann’solder daughtersAriana Biermann, 21, andBrielle Biermann, 26, in 2013.
Prince Williams/Wireimage

As a potential custody battle looms, a source close to the reality star and her estranged husband previously told PEOPLE that “everyone expects this divorce is going to get really bad because neither of them will give in.”
“Divorce is terrible but the kids are going to have to go through this in a very public manner,” the source said.
“It’s really sad because he is a great dad,” the source added of Biermann, 37. “With that said, they were both very involved parents and they both deserve to share custody and anyone that knows them would agree.”
“She’s not cutting the kids off from Kroy,” another insider close to the mom of six previously told PEOPLE. “She wants him to be involved as their dad.”
RELATED VIDEO: Kim Zolciak-Biermann and Kroy Biermann Split After Nearly 12 Years of Marriage
A friend of theRHOAstar also told PEOPLE that she had beenplanning her splitfrom her husband of nearly 12 years for “a long time,” though that fact hasn’t made the divorce news any easier for the family.
“They are a very tight-knit family and this isn’t easy for any of the children,” the friend said.
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
The Real Housewives of Atlantaairs Sundays at 8 p.m. ET on Bravo.
source: people.com