Khloé Kardashian West's family members have been affected by Tristan Thompson and Jordyn Woods' cheating scandal, but nobody's felt as angry as Kim Kardashian West, a source tells PEOPLE.

“Kim is the one who is really upset about this. She's livid. She's so angry, and she's 100 percent on Khloé's side,” the source says of Kardashian West, 38. “She's there for Khloé, letting her vent and talk about it. They've been in constant contact, and Kim is totally supportive. Guys may come and go, but the bond between the girls is never going away, and they're committed to supporting each other.”

In addition to quickly unfollowing Thompson and Woods on Instagram after the news of their hookup first broke, Kardashian West took Khloé, 34, and her best friend Malika Haqq, 35, on a “relaxing getaway” to Palm Springs, California.

Gregory Pace/REX/Shutterstock
Gregory Pace/REX/Shutterstock

Although Khloé initially slammed Woods, 21, for splitting up her family with Thompson, 27, following the model' Red Table Talk interview, the mother of one had a change of heart on Saturday, placing the blame solely on Thompson — which the source says Kardashian West agrees with.

Khloé Kardashian and Kim Kardashian West Photo: Charley Gallay/Getty
Khloé Kardashian and Kim Kardashian West Photo: Charley Gallay/Getty

“Kim is putting the blame squarely where it belongs, on Tristan,” the source tells PEOPLE. “She is telling Khloé to move on and to focus on being the best mother she can be to True. But Kim isn't going to talk about this much publicly. This isn't her battle to fight in the public eye. But behind the scenes, she's definitely making her opinion known.”

The source adds that Kourtney Kardashian, 39, “also says that it's Tristan's fault.”

“He's the one who made commitments to Khloé and he's the one who broke his promises. What Jordyn did was bad, but she didn't have the obligations and the promises that Tristan had,” the source says.

Tristan Thompson and Khloé Kardashian. Photo: Jerritt Clark/Getty
Tristan Thompson and Khloé Kardashian. Photo: Jerritt Clark/Getty

Meanwhile, Kanye West has taken his own “protective” stance in solidarity with his sister-in-law Khloé.

“Kanye thinks of himself as the godfather in this family, and he has the mindset that if anyone messes with one of them, they mess with them all. So right now, Tristan and Jordyn are on his list,” the source says of the rapper, 41. “If he never talks to them again, it's fine by him. He wasn't close to them in the first place.”

“He's protective of the Kardashian women, all of them, and if anyone hurts them, he will always be their biggest advocate,” the sources adds.

The source went on to tell PEOPLE that the KarJenners are most upset about how Thompson “publicly embarrassed Khloé.”

“Really at issue is the fact that Tristan publicly embarrassed Khloé, and if there's anything the Kardashians won't tolerate, it's being embarrassed by someone else's bad behavior,” the insider explains. “So the family is circling the wagons around Khloé and everyone is there for her. She's texting and talking to them constantly, and all of them are 100 percent there for her.”

Days after news of the cheating scandal first broke, Kourtney shared a series of images of herself posing with Khloé, Kendall Jenner and Kylie Jennerahead of an Oscars afterparty in Los Angeles, captioning one sweet shot, “Forever.this link opens in a new tab

Khloé also shared the photosthis link opens in a new tab, captioning one, “Step up in the bitch like,” a quote from brother-in-law West‘s song “Waves.”

And after Khloé made her first public appearance last week, Kardashian West came to Khloé's defense when a Twitter user criticized the Good American co-founder for “going outside the next day” after “someone cheats on you publicly.”

“Would you prefer she lose the [money] too? A single mom has to work too boo!” Kim tweetedthis link opens in a new tab. “This was a professional commitment planned far in advance and you better believe she is not waiting on anyone to pay her bills or provide for her daughter. PERDIODT!!!”

Opening up about her “awful” and “humiliating” weekthis link opens in a new tab in a series of emotional tweets on Saturday, Khloé shared that despite her previous comments, “Jordyn is not to be blamed for the breakup of my family.

“This has been an awful week & I know everyone is sick of hearing about it all (as am I). I'm a rollercoaster of emotions & have said things I shouldn't have. Honestly, Tristan cheating on me & humiliating me, wasn't such a shock as the first time,” she wrote. “What's been harder & more painful is being hurt by someone so close to me. Someone whom I love & treat like a little sister. But Jordyn is not to be blamed for the breakup of my family. This was Tristan's fault.”

Khloé Kardashian, Tristan Thompson and baby True on Thanksgiving 2018. Photo: Tristan Thompson/Instagram

Khloé added that she wants to focus on her “blessings,” which include her 10-month-old daughter True, whom she shares with Thompson.

“I have to move on with my life & count my blessings, my family, my health, & my beautiful baby True,” she wrote.