Scott Disick has gone back to his bad boy ways after his ex Kourtney Kardashian got engaged to Travis Barker.
Scott was snapped out with Elizabeth Grace Lindley -- who is just 20. Scott is 38.
Scott is rumored to be hurt over Kourtney's engagement.
"Scott is going crazy," an insider told Page Six. "He's going to go off the deep end. It's really bad. It's about to get dark."
Another source told People, "Scott never approved of Kourtney dating Travis. He has struggled with their relationship. He always had this idea that he and Kourtney would eventually get back together. He was pretty shocked when he found out that she was dating Travis."
Scott has dated lots of young women since splitting from Kourtney, including Sofia Richie and Amelia Hamlin.
In an episode of KUWTK in February, Scott said he wanted to marry Kourtney.
"Wherever Kourt stands, I stand with her … forever," Disick says after Kim Kardashian asks if he and Kourtney will get back together. "I love you. And I'm ready to marry you, right here, right now. Kourtney knows that eventually we'll get married and live a good life," he continues.