Scott Disick, 34, allegedly 'hooking up' with 19-year-old star

Scott Disick reportedly has a new lady in his life.

The "Keeping Up WIth the Kardashians" bad boy is hooking up with Sofia Richie, an insider told Us Weekly this week. 

SEE ALSO: Kim Kardashian shows off fit bikini bod while soaking up the sun in Malibu -- see the pic!

"Things became official over the past week while they were in New York City together," the source said of the pair.

"It's so weird," the insider continued. "Not just the age difference, but mostly the fact that Sofia had been a family friend for years, and was close to Kendall and Kylie."

Disick, 34, and Richie, 19, had been spotted interacting throughout the summer, beginning with some flirty-looking photos of them during the Cannes Film Festival in May. Though Richie denied romance rumors on Twitter by announcing that they're "just homies," they have also been caught FaceTiming, grabbing coffee and shopping together over the past several months.

31 PHOTOS
Scott Disick out and about
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Scott Disick out and about
NEW YORK, NY - SEPTEMBER 08: Scott Disick and Kris Jenner are seen walking in Soho on September 8, 2017 in New York City. (Photo by Raymond Hall/GC Images)
LOS ANGELES, CA - SEPTEMBER 15: Sofia Richie and Scott Disick are seen on September 15, 2017 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
NEW YORK, NY - SEPTEMBER 07: Scott Disick attends Kith Sport fashion show during New York Fashion Week at the Classic Car Club on September 7, 2017 in New York City. (Photo by Chance Yeh/Getty Images)
NEW YORK, NY - SEPTEMBER 07: Scott Disick and Kris Jenner are seen walking around the Bergdorf Goodman Store on 5th Av on September 7, 2017 in New York City. (Photo by Pierre Suu/GC Images)
NEW YORK - SEPTEMBER 06: Scott Disick gets dinner at Estiatorio Milos on September 06, 2017 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
LOS ANGELES, CA - SEPTEMBER 02: Scott Disick is seen on September 2, 2017 in Los Angeles, California (Photo by SMXRF/Star Max/GC Images)
ATLANTIC CITY, NJ - AUGUST 04: Scott Disick hosts The Pool After Dark at Harrah's Resort on Friday August 4, 2017 in Atlantic City, New Jersey. (Photo by Tom Briglia/ WireImage)
NEW YORK - AUGUST 02: Kim Kardashian and Scott Disick get lunch at Cipriani and shop at 'Off White' new store in Soho on August 02, 2017 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK, NY - JULY 31: Scott Disick is seen in SoHo on July 31, 2017 in New York City. (Photo by Gotham/GC Images)
LAS VEGAS, NV - JULY 23: Television personality Scott Disick hosts a night out at 1 OAK Nightclub at The Mirage Hotel & Casino on July 23, 2017 in Las Vegas, Nevada. (Photo by Bryan Steffy/WireImage)
LAS VEGAS, NV - JULY 22: Television personality Scott Disick hosts a pool party at the LIQUID Pool Lounge at the Aria Resort & Casino on July 22, 2017 in Las Vegas, Nevada. (Photo by Bryan Steffy/WireImage)
LAS VEGAS, NV - JUNE 10: Television personality Scott Disick attends the daytime party at the LIQUID Pool Lounge at the Aria Resort & Casino on June 10, 2017 in Las Vegas, Nevada. (Photo by David Becker/WireImage)
LOS ANGELES, CA - JUNE 02: Scott Disick is seen at LAX on June 02, 2017 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MAY 22: Scott Disick and Bella Thorne are seen at LAX on May 22, 2017 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
LAS VEGAS, NV - MAY 20: Ttelevision personality Scott Disick celebrates his birthday at 1 OAK Nightclub at The Mirage Hotel & Casino on May 20, 2017 in Las Vegas, Nevada. (Photo by Bryan Steffy/WireImage)
LOS ANGELES, CA - APRIL 12: Scott Disick is seen on April 12, 2017 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LAS VEGAS, NV - MAY 20: (L-R) Cooper Mount, Connor Treacy, television personality Scott Disick, a Liquid Pool Lounge employee and recording artist Everybody Knows LO celebrate Disick's birthday at the Liquid Pool Lounge at the Aria Resort & Casino on May 20, 2017 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/WireImage)
LAS VEGAS, NV - MARCH 03: Scott Disick and Robin Leach attend Sugar Factory Las Vegas Grand Opening on March 3, 2017 in Las Vegas, Nevada. (Photo by Denise Truscello/Getty Images for Wynn Las Vegas)
LAS VEGAS, NV - MARCH 18: Scott Disick hosts Sugar Factory Las Vegas Grand Opening on March 18, 2017 in Las Vegas, NV (Photo by Denise Truscello/Getty Images for Wynn Las Vegas)
LOS ANGELES, CA - FEBRUARY 09: Scott Disick is seen on February 9, 2017 in Los Angeles, CA. (Photo by gotpap/Star Max/GC Images)
LOS ANGELES, CA - MARCH 03: Scott Disick is seen on March 03, 2017 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LOS ANGELES, CA - NOVEMBER 28: Scott Disick is seen on November 28, 2016 in Los Angeles, California. (Photo by BG001/Bauer-Griffin/GC Images)
LOS ANGELES, CA - NOVEMBER 16: Scott Disick is seen on November 16, 2016 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LAS VEGAS, NV - OCTOBER 30: Television personality Scott Disick arrives at 1 OAK Nightclub at The Mirage Hotel & Casino to host an 'American Psycho' Halloween party on October 30, 2016 in Las Vegas, Nevada. (Photo by Mindy Small/FilmMagic)
LOS ANGELES, CA - OCTOBER 17: Scott Disick is seen on October 17, 2016 in Los Angeles, California. (Photo by gotpap/Star Max/GC Images)
LOS ANGELES, CA - OCTOBER 13: Scott Disick is seen on October 13, 2016 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LOS ANGELES, CA - SEPTEMBER 20: Scott Disick is seen on September 20, 2016 in Los Angeles, California. (Photo by BG012/Bauer-Griffin/GC Images)
LOS ANGELES, CA - OCTOBER 12: Scott Disick and Kendall Jenner seen on October 12, 2016 in Los Angeles, California. (Photo by BG001/Bauer-Griffin/GC Images)
LAS VEGAS, NV - SEPTEMBER 02: Scott Disick arrives at 1 OAK Las Vegas in the Mirage Hotel and Casino on September 2, 2016 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
LAS VEGAS, NV - AUGUST 13: Television personality Scott Disick arrives at 1 OAK Nightclub at The Mirage Hotel & Casino on August 13, 2016 in Las Vegas, Nevada. (Photo by Mindy Small/FilmMagic)
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The confirmation of their fling comes towards the end of a whirlwind year for Disick, who has been linked to more than a handful of women over the last nine months, including fellow 19-year-old Bella Thorne and stylist Chloe Bartoli.

In fact, Bartoli and Richie used to be close friends before Disick reportedly came between them. Us Weekly also reported this week that the former friends aren't speaking to one another and have unfollowed each other on Instagram.

"After Sofia started hooking up with Scott, Chloe stopped speaking to her," the source said. "It's a mess. They were the best of friends and were inseperable."

Bartoli and Disick go back at least a couple of years, too. It was the father-of-three's steamy poolside pictures with Bartoli that led to the end of his years-long relationship with Kardashian back in 2015.

Kardashian and Disick share Mason, 7, Penelope, 5, and Reign, 2, together. Though Kardashian has said on more than one occasion that she is done romantically with Disick for good, the pair is still amicable and routinely spends time together for the benefit of their children.

32 PHOTOS
Kourtney Kardashian out and about
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Kourtney Kardashian out and about
LOS ANGELES, CA - JULY 26: Kourtney Kardashian is seen on July 26, 2017 in Los Angeles, California. (Photo by Hollywood To You/Star Max/GC Images)
LOS ANGELES, CA - JULY 07: Kourtney Kardashian is seen at LAX on July 07, 2017 in Los Angeles, California. (Photo by LAXPICS/Bauer-Griffin/GC Images)
LOS ANGELES, CA - JUNE 30: Kourtney Kardashian is seen at LAX on June 30, 2017 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
LOS ANGELES, CA - JUNE 16: Kourtney Kardashian is seen on June 16, 2017 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
MIAMI BEACH - JUNE 11: Kourtney Kardashian seen on the beach with her son, Reign Disick on June 11, 2017 in Miami, Florida. (Photo by MTMI/BuzzFoto via Getty Images)
CLEVELAND, OH - JUNE 09: TV personalities Kourtney Kardashian, Khloe Kardashian and Kris Jenner react in Game 4 of the 2017 NBA Finals between the Golden State Warriors and the Cleveland Cavaliers at Quicken Loans Arena on June 9, 2017 in Cleveland, Ohio. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Jason Miller/Getty Images)
CANNES, FRANCE - MAY 24: Kourtney Kardashian and Younes Bendjima are spotted during the 70th annual Cannes Film Festival at on May 24, 2017 in Cannes, France. (Photo by J. Almasi/GC Images)
CANNES, FRANCE - MAY 21: Kourtney Kardashian attends a dinner hosted by Jamie Reuben & Michael Kives with Arnold Schwarzenegger to celebrate Jean-Michel Cousteau's 'Wonders Of The Sea' during the 70th International Cannes Film Festival at Villa Golden Gate on May 21, 2017 in Cannes, France. (Photo by David M Benett/Dave Benett/Getty Images)
CANNES, FRANCE - MAY 22: Kourtney Kardashian is spotted during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by J. Almasi/GC Images)
HOLLYWOOD, CA - APRIL 12: Kourtney Kardashian attends the premiere of Open Road Films' 'The Promise' on April 12, 2017 in Hollywood, California. (Photo by JB Lacroix/WireImage)
LOS ANGELES, CA - APRIL 05: Kourtney Kardashian is seen on April 05, 2017 in Los Angeles, California. (Photo by BG001/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MARCH 30: Television personality Kourtney Kardashian is seen on March 30, 2017 in Los Angeles, California. (Photo by Hollywood To You/Star Max/GC Images)
LOS ANGELES, CA - MARCH 19: Kourtney Kardashian and Kris Jenner seen out and about on March 19, 2017 in Los Angeles, CA. (Photo by ADV/BuzzFoto via Getty Images)
LOS ANGELES, CA - FEBRUARY 11: Kourtney Kardashian arrives at the Pre-GRAMMY Gala and Salute to Industry Icons Honoring Debra Lee on February 11, 2017 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - FEBRUARY 07: Kourtney Kardashian is seen on February 07, 2017 in Los Angeles, California. (Photo by TSM/Bauer-Griffin/GC Images)
LOS ANGELES, CA - DECEMBER 13: Kourtney Kardashian is seen on December 13, 2016 in Los Angeles, California. (Photo by SMXRF/Star Max/GC Images)
NEW YORK, NY - NOVEMBER 21: hloe Kardashian and Kourtney Kardashian attend Gabrielle's Angel Foundation For Cancer Research Hosts Angel Ball 2016 on November 21, 2016 in New York City. (Photo by Dimitrios Kambouris/Getty Images for Gabrielle's Angel Foundation)
LOS ANGELES, CA - NOVEMBER 04: Kourtney Kardashian is seen on November 04, 2016 in Los Angeles, California. (Photo by wowcelebritytv/Bauer-Griffin/GC Images)
WESTLAKE VILLAGE, CA - NOVEMBER 04: Kourtney Kardashian films an episode of Amazon's live stream fashion and beauty show 'Style Code Live' at Four Seasons Hotel on November 4, 2016 in Westlake Village, California. (Photo by John Sciulli/Getty Images for Amazon's Style Code Live )
LOS ANGELES, CA - NOVEMBER 02: Kourtney and Khloe Kardashian are seen on November 02, 2016 in Los Angeles, California. (Photo by BG008/Bauer-Griffin/GC Images)
WEST HOLLYWOOD, CA - OCTOBER 19: Tv personality Kourtney Kardashian attends Cocktail Party With Manuka Doctor Global Brand Ambassador Kourtney Kardashian at Gracias Madre on October 19, 2016 in West Hollywood, California. (Photo by Charley Gallay/Getty Images for Manuka Doctor)
PARIS, FRANCE - OCTOBER 02: Kim Kardashian and Kourtney Kardashian attend the private Dinner hosted by Surface Magazine And Azzedine Alaia Private Dinner as part of Paris Fashion Week Spring/Summer 2017on October 2, 2016 in Paris, France. (Photo by Bertrand Rindoff Petroff/Getty Images for Surface Magazine)
PARIS, FRANCE - OCTOBER 02: (L-R) Kim Kardashian West and Kourtney Kardashian arrive at the 'Alaia' showroom on October 2, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - OCTOBER 01: Kourtney Kardashian arrives at 'Kinugawa' a japanese restaurant on October 1, 2016 in Paris, France. (Photo by Pierre Suu/GC Images)
PARIS, FRANCE - SEPTEMBER 30: Kim Kardashian West, Ellen von Unwerth and Kourtney Kardashian attend Buro 24/7 Fashion Forward Initiative as part of Paris Fashion Week Womenswear Spring/Summer 2016 at Hotel Ritz on September 30, 2016 in Paris, France. (Photo by Jacopo Raule/Getty Images)
PARIS, FRANCE - SEPTEMBER 30: Corey Gamble and Kourtney Kardashian are seen on September 30, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - SEPTEMBER 29: (L-R) Kim Kardashian West, Kourtney Kardashian and Kanye West leave the 'Givenchy' office on September 29, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
LOS ANGELES, CA - SEPTEMBER 28: Kourtney Kardashian is seen at LAX on September 28, 2016 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
MIAMI BEACH, FL - SEPTEMBER 17: Kourtney Kardashian is sighted on Miami Beach on September 17, 2016 in Miami Beach, Florida. (Photo by Steven Gonzalez/GC Images)
NEW YORK, NY - SEPTEMBER 11: (EXCLUSIVE COVERAGE) (L-R) North West, Penelope Disick, Kourtney Kardashian, Mason Disick and 'So You Think You Dance' Season 11 Winner Ricky Ubeda as 'Mr.Mistoffelees' visit 'Cats' on Broadway at The Neil Simon Theatre on September 11, 2016 in New York City. (Photo by Bruce Glikas/Bruce Glikas/Getty Images)
NEW YORK, NY - SEPTEMBER 09: TV personality Kourtney Kardashian attends Harper's BAZAAR Celebrates 'ICONS By Carine Roitfeld' at The Plaza Hotel on September 9, 2016 in New York City. (Photo by Michael Stewart/WireImage)
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