AfterSailor Brinkley-Cook‘sheroic sub-inonDancing with the Starsfor her momChristie Brinkley, whobroke her arm during rehearsals, it was clear that the two have a very close mother-daughter relationship. And sources say Sailor, 21, is also tight with her father, Hamptons-based architectPeter Cook, 60, who recently gotengagedto his21-year-old fiancée, Alba Jancou.

“Despite the bitter breakup between Peter and Christie, Sailor has a very close relationship with her dad,” a source close to the situation tells PEOPLE.

“She always raves about him. But she has not said a word to anybody about his personal life or the new girlfriend,” the source continues.

Sailor Brinkley Cook/Instagram

Peter Cook Sailor Brinkley Cook

Brinkley, and Cook, who were married in 1996, divorced in anexplosively nastytrial in 2008 after Brinkley, 65, learned of Cook’s affair with his then-19-year-old assistant Diana Bianchi.

After Bianchi came forward in 2007, Cook was also accused of having romantic relations with another former employee, Samantha Cole, who was 18 at the time.

In June, Sailor, 21, shared a sweet throwback photo with Cook in honor of his birthday. “Happy birthday to my dad ♥️ i love you forever and always to the moon and back.”

Last year, theDancing with the Starsalumwished Cook a happy birthday onInstagramcalling him her “best friend” and “rock.”

“Happy birthday to my best friend, my rock. I love you so much, dad,” Sailor captioned two photos. “No matter what!”

And inanother postfrom 2018, Sailor shared a throwback of the two of them. “Happy fathers day, pops. I love you to the moon and beyond, through every lifetime and every universe forever and ever,” she captioned the photo.

Peter Cook Sailor Brinkley Cook

Back in 2017, the modelgot candid about growing up with divorced parents on Instagram.

“My parents had just gotten divorced and I was so confused about everything,” she wrote alongside a series of throwback photos in honor of friend Emma Scott’s birthday.

“There was this little after-school counseling session for kids with divorced parents that the school put me in called ‘banana splits’,” Sailor added. “Basically all we did was make banana splits and talk about how we have 2 christmas’ and how that was a plus lol.”

Allen Berezovsky/Getty

Sailor Brinkley-Cook

Cook (who adopted Brinkley’s son Jack, 24, in the ’90s) has reportedly been dating his new fiancée for about a year.

Alba Jancou and Peter Cook.Mark Sagliocco/Getty Images

Peter Cook

Prior to her time at the New Orleans, Louisiana college, Jancou “attended a prestigious English private boarding school” called Millfield, which is located in southern England.

The couple was vacationing in Santorini, Greece on Sept. 15 when Cookpopped the questionwith a six-carat Glenn Bradford diamond ring in front of a church, Page Sixreports.

“We consider ourselves incredibly lucky to have found, in each other, our soulmate,” Cook added in a statement to Page Six. “We are looking forward to many years of wedded bliss!”

source: people.com