Cara Delevingne may find herself falling out with longtime pal Suki Waterhouse if her model pal's new rumored romance with actor Richard Madden winds up being a long-term affair.

According to The Sun, Waterhouse, 25, is dating the actor, 30, who is best known for portraying Robb Stark on the first three seasons of Game of Thrones, and while the pair's relationship is still young, they seem to be hitting it off well.

"Suki and Richard recently started dating after meeting through mutual friends," a source said. "It's early days but they've got a great connection and are looking forward to spending quality time with each other."

However, the romance may not fly well with Delevingne, 24, who had a public spat with Madden back in 2015, after the actor criticized her wildly awkward interview about the movie Paper Towns, where the show's hosts she was interviewing with rudely indicated she must have been too tired to talk to them and told her to drink an energy drink after she cut the interview short.

Madden later said that she came off as "ungrateful," and Delevingne called him out on Twitter and tol him to focus on his own career. He apologized by saying that his words were blown out of proportion.

However, the spat reportedly still doesn't sit well with Delevingne, and it's likely to make things awkward when Waterhouse tries to introduce her new beau to one of her best friends.

"Obviously it's horrendously awkward for Suki given her friendship with Cara and her history with Richard," a source said. "Cara was furious with his comments and doesn't exactly think highly of him. There are definitely going to be some awkward times ahead for the three of them."

Prior to this romance, Madden reportedly dated Strictly Come Dancing's Laura Whitmore, and was also linked to Doctor Who actress Jenna Coleman. Waterhouse dated actor Bradley Cooper for two years before the two called off their romance in 2015.

Tags: cara delevingne Suki Waterhouse Richard Madden