Scott Disick, who shares children Mason, Penelope and Reign with Kourtney Kardashian, is said to be "struggling" with her new relationship with Travis Barker.
Things seem to be moving quickly for the new couple – they recently spent the Poosh founder's birthday together; Travis also got Kourtney's name tattooed on his chest – but her friendly ex, who "has been jealous" of her past relationships before, is "struggling even more" this time around, a source tells People.
"Before Travis, Kourtney's relationships were never serious. It was more like flings. With Travis, it's different," the insider says. "Scott was pretty shocked when he found out that they are dating, and he can tell that they have moved very quickly. His kids love Travis, which is also hard for Scott. Kourtney and Travis are like a family with the kids. Scott is having a hard time with this situation."
The source adds that Scott "has many regrets" when it comes to Kourtney. "He knows that he messed up their relationship and let her down. For a long time, he still hoped that they would end up back together."
In an upcoming episode of Keeping Up With the Kardashians, it looks as though Scott will open up about these feelings. "I feel like I just don't like seeing you with another guy," he tells Kourtney.
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