Sofia Richie and Scott Disick appear to be having fun with their new relationship, but according to a new report, the 19-year-old model has been a bit spooked by her boyfriend's bad-boy ways.

As fans of Keeping Up with the Kardashians will recall, Disick, 34, has often exhibited wild behavior, and since splitting from Kourtney Kardashian in 2015, he has been linked to a number of women, including Bella Thorne. At times, he's been linked to multiple women at once.

Although Disick appears to be keeping his focus on Richie, the young model allegedly has her doubts about his ability to stay faithful and has reportedly been on a roller-coaster of emotions since they began dating.

“She’s a young kid and she’s not emotionally secure to handle this romance,” a friend explained to Radar Online on Jan. 2.

According to the report, Richie is jealous and insecure about the time Disick has spent with other women. Because of that, Disick reportedly has the upper hand in their relationship.

“He’s older and on the sly side, and he takes advantage of her inexperience,” the insider continued, adding that Richie is totally “paranoid” about Disick and often goes through his phone when he isn’t around.

In addition, the insider continued, Richie is reportedly unhappy about Disick's closeness with his ex-girlfriend, Kourtney Kardashian, 38, and doesn't like to be left out of the things they do with their kids, 8-year-old Mason, 5-year-old Penelope, and 3-year-old Reign.

Disick and Kardashian dated on and off for nine years before calling it quits after he was caught getting cozy with ex-girlfriend Chloe Bartoli in the south of France. In the years that followed, Kardashian was linked to Justin Bieber before striking up a romance with 24-year-old model Younes Bendjima.

Just last week, Kardashian welcomed Bendjima to her family's annual Christmas party at the home of her mother, Kris Jenner. Meanwhile, though Disick was allowed to attend, Richie was reportedly banned from attending the star-studded event.

To see more of Kourtney Kardashian, Scott Disick, and their family, tune in to new episodes of Keeping Up with the Kardashians season 14 on Sundays at 9 p.m. on the E! Network. No word yet on whether or not Sofia Richie will be added to the cast for any of the show's upcoming episodes.