Maybe Pete Davidson has a thing for brunettes after a year of dating Ariane Grande and Kate Beckinsale.

Or maybe the “Saturday Night Live” star was enticed, as Brad Pitt was, by the way lithesome brunette actress Margaret Qualley plays a particular scene in Quentin Tarantino’s new hit film, “Once Upon a Time in Hollywood.”

In the scene, Qualley is a teenage follower of Charles Manson who hitches a ride to Spahn Ranch with Pitt’s stuntman character Cliff Booth. In free-love hippie mode, Qualley’s “Pussycat” flirts with Booth by stretching out in the front seat of his car. She offers to perform oral sex and rests her feet on the dashboard.

The soles of Qualley’s feet are noticeably dirty, but that’s apparently part of Tarantino’s idea of fetishistic, counterculture allure. Dirty feet are also in keeping with Pussycat being a member of rag-tag murderous cult whose members go dumpster diving for food.

News hit this week that 24-year-old Qualley was dating 25-year-old Davidson, who was last seen yelling at students in a standup gig at University of Central Florida.

Us Weekly cites a source who says the two have been seeing each other for a couple months “and Margaret is really excited about him.”

The source added that the pair plan to make their red carpet debut at the Venice Film Festival on Friday. Qualley plays a supporting role in the Jean Seberg biopic, “Seberg,” starring Kristen Stewart, which premieres at the festival.

But before news emerged about Qualley’s love life, the actress was having a pretty excellent summer. Critics say she’s the breakout star of Tarantino’s ode to fame and 1960s Hollywood, with Vulture describing that car-ride scene with Pitt as her big moment to shine.

Qualley, whose mother is model and actress Andie MacDowell, admitted in an interview that she was rather nervous about showing her bare feet on screen.

“I genuinely was like, ‘Quentin, this is a bad idea. I don’t have good feet,’” Qualley told IndieWire. “I was in pointed shoes for far too long to have toes that can be shown to the world.”

But Tarantino insisted, and Qualley eventually “did the foot thing” and with no regrets. “I used to actually be pretty mortified with my feet,” Qualley told Indiewire. “Maybe I can finally just give up that now.”

Meanwhile, Qualley might have some fun with Davidson, though she better be prepared for an intense new level of media attention. After all, Davidson became the subject of gossip headlines over the past year because of his whirlwind engagement to singer Grande and for his fling with “older” actress Beckinsale, 46. The Beckinsale affair was marked by paparazzi photos of Davidson and Beckinsale making out at a New York Rangers hockey game.

But in dating Davidson and having him as her arm candy at the Venice Film Festival, Qualley also might be solidifying her star power, Vulture said. Qualley previously dated Oakland, Calif.-born director Cary Fukunaga, who is 18 years her senior, according to reports.

“Showing off the internet’s favorite plaything at a prestigious film exhibition is perhaps the definition of a boss move,” said Vulture, which also predicted that the autumn will bring an onslaught of paparazzi shots of Davidson and Qualley, sitting courtside at a Knicks game or walking through Soho.

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