Sofia Richie is dating entrepreneur Matthew Morton after splitting from Scott Disick again.Us Weekly broke the news on Monday, October 19, with a source saying, “They’re trying not to make a big deal about their relationship or about how serious it is. But they are definitely seeing each other.”Richie, 22, was spotted with Morton, 27, on Saturday, October 17, during a dinner date at Nobu in Malibu.