Earlier this month, Disick's ex Kourtney Kardashian got engaged to the Blink-182 drummer.
"Scott has eyes and so does everyone in the family. They all see that Kourtney has completely changed her style but it's only bitter Scott that sees it as a bad thing," a source spilled to HollywoodLife. Fans have noticed that the Poosh founder has been wearing dark and edgy clothing since she started dating the 45-year-old.
"She is sexy and she is looking hotter than ever and with someone who makes her feel beautiful 10000 percent of the time. If Scott had his way, he’d have kept her in sweatpants at home with the kids while he went and did whatever he wanted," the insider added.
The insider said that the Flip It Like Disick alum does not "hate" Barker but he won't be joining the couple on family vacations any time soon.
"[Kourtney] is happy and she is ready to marry someone that deserves and appreciates her," the source explained. "Scott will just have to deal because that is neither her, nor Travis’s concern."
Another insider told the publication that the self-proclaimed "Lord" has "never been a huge fan" of the musician and doesn’t really "agree" with his kind of energy. "Travis has a dark sense of humor," the source explained. "Scott worries that it’s going to rub off on his children."
Disick "also thinks Travis has already completely changed Kourtney and doesn’t like it. It’s like she’s a whole new person," the insider added.
"Of course his feelings are a little hurt with the engagement news, but that’s not his main concern right now," the source said. "His main concern is that Kourtney and the kids are happy. At the end of the day, he wants the best for Kourtney and their children."
Barker and Kardashian have reportedly been friends for several years now. They were first linked earlier this year before they went Instagram official on Valentine's Day.