Scott Disick
Scott Disick and Sofia Richie pack on PDA in Italy. Pictured: Disick arrives at the 2012 Miss Universe Pageant at Planet Hollywood Resort & Casino on Dec. 19, 2012 in Las Vegas. Getty Images/David Becker

Scott Disick and Sofia Richie take their steamy romance in Venice.

Over the weekend, Disick and Richie were spotted at LAX airport holding hands as they board their flight out of Los Angeles. Later that day, Richie took to Instagram and announced that they are in Milan for Adidas's INIKI event. The "Keeping Up With the Kardashians" star and the model are still in Italy and they are enjoying their stay in the country.

In the photos shared by Entertainment Tonight, the pair kissed during a romantic gondola ride. They continued to pack on PDA as they were photographed locking lips again after the ride. Richie shared some photos of their getaway on Instagram. In one post, she stands beside her beau and wrote "Run away with it" in the caption.

Meanwhile, Kourtney Kardashian is not affected with her ex's and his new girlfriend's romantic getaway. On Tuesday, Kourtney was spotted with her sister Kim Kardashian in Westlake Village, California. The pair have already started their holiday shopping. During their shopping, the reality stars brought the cameras to film an episode for E!'s "Keeping Up With the Kardashians."

Kourtney and Disick share three children, Mason, 6, Penelope, 5, and Reign, 2. Disick recently admitted that he finds it hard to accept that Kourtney is moving on from their split. "Kourtney having a good time makes me happy," Disick said (via People). "But of course, in the back of my heart and mind I get a little jealous, because I wish we could have had some of those times while we were together."

An insider revealed that Disick is still not over Kourtney despite having a new girlfriend. According to the source, Richie is more invested in her relationship with Disick because the latter is not as committed as she is. "Scott isn't treating this as a long-term relationship whatsoever," the source said. "He is just having fun. Sofia wanted commitment from him, so he committed to be her 'boyfriend.'"

The insider added that Disick has Kourtney at the top of his mind and is still texting and flirting with other girls. The source also pointed out that Richie is too young and naive she "doesn't know what she's in for."

Do you agree that Disick is not serious with Richie? Drop a comment below.