Harry Styles just denied dating Cara Delevingne, but that didn’t stop the One Direction singer from supporting the supermodel at London Fashion Week! When a news presenter asked Styles, 19, in the front row during LFW, "Are you looking forward to seeing your girl Cara walking down the runway?" Styles said, "She's not my girl! I know what you're doing."

There have been rumors for weeks that Styles has been pursuing Delevingne, 21—even before the 1D singer dated Taylor Swift. “Harry’s been chasing Cara non-stop,” a source told E! News. “He really likes her and has been saying that he wants to be exclusive with her.”

E! News also reported that the duo had been officially dating for around two weeks. Apparently, Styles "says he wants them to be boyfriend and girlfriend. But right now, Cara is not sure what to do.”

Harry Styles and Sienna Miller Harry Styles chatted with actress and (Cara Delevingne friend) Sienna Miller.

SEE ALSO: Who Does Harry Styles Have A Crush On Now?

Well, no matter what she decides to do in the long run, Styles is certainly checking Delevingne out at work. Styles has been in the front row at the Burberry, House of Holland and the Fashion East show. “Of course he might profess his love for her – and he has done that on many occasions – but she’s heard it all before,” another source said. “He said that to her just a month before he went public with Taylor, so I imagine she’s learned her lesson.”

Despite Delevingne’s trepidation at committing to the 1D lothario, Styles and Delevingne posed for a fun Instagram picture together backstage at the Burberry show. To Delevingne's amusement, Styles donned a beanie that covered his pretty face. The face of Burberry captioned the pic, “Got another one @blackscore #bsroguemodels”

Cara and Harry Cara Delevingne and Harry Styles pose backstage at Burberry.

Styles also sat next to Delevingne’s friend Sienna Miller during LFW and her sister, Poppy Delevingne. “They’ve actually had an on/off thing going all this time when they’re in the same city, but they’ve never had the chance to give a real relationship a shot,” an insider explained. “I can’t imagine she wants to join the list of women who have been Harry’d.”

Even if the supermodel doesn’t want Styles’ affections right now, the One Direction singer knows why people love the supermodel. "It's probably them eyebrows, yeah, probably them.” Super cute!