In an effort to get out of Los Angeles and take in some foreign culture, Kourtney decided to fly to France for the annual Cannes Film Festival, where she'd also get a chance to enjoy an idyllic getaway with her new man, Younes Bendjima.
But for Scott, the trip seemed to be more of a slap in the face, and he went a little too far with his reaction to the news that Kourtney was going on a romantic getaway.
"We got into like, a full war," Kourtney revealed to her sisters, Kim and Khloe Kardashian, recounting a series of phone calls and text message conversations the former couple had recently had.
"He was like, 'You're gonna have a great time,'" Kourtney said, imitating Scott's sarcastic tone. "And then he's threatening me now. He's like, 'Your little friend is gonna get beat up every single day when we're there.' He goes, 'Enjoy yourself. Walking around, you better watch your back.'"
"'I'm like, 'Oh, are you gonna have people attack me?'" she continued. "And he's like, 'You're the love of my life. Why would I have anyone attack you?... Just don't expect anywhere you go will be easy now.'"
"I said, 'I will actually never speak to you again with your threats, you psychopath,'" she shared. "'If you threaten me and my friends, it's over. That's not how I will be treated. You've treated me horrible for years.'"
"I just can't believe that he would stoop this low and speak to her like this," Khloe said. "At the end of the day, she's still the mother of his children. So to say that he's gonna have people get beat up? That's disgusting. So I really hope he was out of his right mind… It's just so childish."
After he seemingly ignored several of Khloe's phone calls, Scott did sit down for a solo interview with the show, and admitted that he went too far with his intimidating remarks.
"You know, when Kourtney was telling me that she was going, she was kinda being a drop condescending and I think I got defensive, and just said, like, 'OK great, if you're gonna be in Cannes with another guy, have fun, but just know that it's probably not gonna be that fun if you run into me and my friends,'" Scott shared.
"The fact of the matter is she's allowed to live her life. She's a single girl and obviously we all know that I do what I want so she should be able to do what she wants," he continued. "But there's a lot of anger. Like, wow, it's really real, us not being together."
Later in the episode, as Kourtney and sister Kendall Jenner were getting ready to head to France, Khloe finally got through to Scott, who admitted that he had made a mistake.
"It's just hard, you know? I never thought I'd go through anything like this," he said over the phone.
Scott and Khloe, who have always been close friends, sat down together for the KUWTK cameras and Scott acknowledged that he "was acting a bit immature."
"I said a few things that weren't appropriate," he said. "I'm not gonna regret that, because it was like, that's how I felt at the time. You can understand that we have a lot of history. So it's hard."
However, Kim thought Scott was only spending time with Bella in an attempt to get back at Kourtney for her relationship with Younes, scoffing at the unfolding drama when Kendall called her and mom Kris Jenner from Cannes.
"[Scott and Bella] looked so desperate at the airport, like, who goes to LAX together?" Kim said, with Kendall on speakerphone. "It's not a good look for Scott, at all."
"He talked to me about it. He thinks it is," Kendall explained. "He was like, 'I'm doing it to make Kourtney mad."
"I think it's clear to everyone that Scott is doing this just to try to one-up Kourtney, and that seems super malicious," Kim reflected. "Kourtney is genuinely trying to go away and have a good time and he's trying to like, freak her out and make Kourtney think that there's gonna be some crazy drama running. It's just so ridiculous."
Kourney didn't let Scott get to her, and she ended up having a fun time partying with her boyfriend, which she said made it one of the first times she was "really able to have an amazing time and not be worried about what [Scott] was up to."
"I'm not trying to throw anything in anyone's face," she said in a solo interview at the end of the episode. "But I'm also not gonna hide."