Justin Bieber and Hailey Baldwin heat up romance rumors in Miami -- see the flirty pic!

Could Justin Bieber and Hailey Baldwin be giving their relationship another chance?

The two were spotted out and about in Miami over the weekend, adding more fuel to speculations that they've recently reignited their romance.

Bieber, 24, and Baldwin, 21 -- who briefly dated in 2015 -- spent Sunday together, kicking off their night with dinner at Casa Tua. They then went to club LIV in Miami Beach around 1 a.m., spending most of their time in one of the club's sky boxes, according to an eyewitness.

The model dressed to impress for the outing, rocking a white slip dress with Adidas kicks and stunning statement jewelry. Bieber opted for a more casual ensemble, consisting of a black-and-white hoodie and plaid pants.

Justin Bieber and Hailey Baldwin in Miami
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Inside the club, it appears Bieber and Baldwin weren't shy about getting close with one another. A fan captured the "Sorry" singer at one point putting his arm around the blond beauty, posting the video to Instagram on Monday.

The same fan account also captured footage of the two leaving the club, and it's hard not to the notice the giant smile on Bieber's face:

An eyewitness tells ET that they left the club together around 3:20 a.m., holding hands and hopping into a black Escalade.

They were also spotted together the next morning, cuddling up close on a balcony.

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The latest outing comes just two days after Bieber and Baldwin were seen together at the Living Room inside the W South Beach. According to an additional eyewitness, they appeared to be having a low-key night, enjoying drinks with friends. The eyewitness also tells ET that they sat very close together, held hands and stole an occasional kiss every now and then.

Justin’s group appeared to be super sweet and respectful of the staff serving them.

Baldwin told The Times UK last month that she and Bieber were finally friends again following their split in 2016.

"Justin and I were friends for a long time," she revealed. "I met him when I was really young and he was one of my best friends. Everybody knows that at a certain point in time that turned into something else, but that just happens when you're 18, 19. It was what it was."

"We went through a long period of time when we weren't friends," she continued. "We didn't speak for quite some time and there was a lot of weirdness that went on. We've moved past that. I'd never been through [a high-profile relationship] like that, but it brought both of us to the realization that we just work much better as friends. He's somebody I really cherish. Now it's a very mature situation. It's good."

Back in April 2016, Baldwin admitted it wasn't easy dating Bieber in an interview with Marie Claire

"I don't want attention out of dating somebody," she said at the time. "It's hard to date somebody in this industry. You have to have really thick skin and be very strong."

"You have to focus on the person and nothing else," she added.

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Hailey Baldwin out and about
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Hailey Baldwin out and about
NEW YORK, NY - JUNE 07: Hailey Baldwin attends CHAOS x LOVE magazine party on June 7, 2018 in New York City. (Photo by John Lamparski/Getty Images)
NEW YORK, NY - JUNE 07: Hailey Baldwin (L) and Kendall Jenner are seen in Tribeca on June 7, 2018 in New York City. (Photo by Gotham/GC Images)
Hailey Baldwin attends the Whitney Museum Celebrates The 2018 Annual Gala And Studio Party at The Whitney Museum of American Art on May 22, 2018 in New York City. (Photo by Michael Ostuni/Patrick McMullan via Getty Images)

Hailey Baldwin poses in front of a 2018 Audi TT RS the 2018 Whitney Gala Sponsored By Audi on May 22, 2018 at Whitney Museum of American Art in New York City.

(Photo by Dimitrios Kambouris/Getty Images for The Whitney Museum of American Art)

Hailey Baldwin attends the 2018 Whitney Gala Sponsored By Audi on May 22, 2018 at Whitney Museum of American Art in New York City. (Photo by Dimitrios Kambouris/Getty Images for The Whitney Museum of American Art)
TV personality-model Hailey Baldwin attends the 2018 Billboard Music Awards 2018 at the MGM Grand Resort International on May 20, 2018, in Las Vegas, Nevada (Photo by LISA O'CONNOR / AFP) (Photo credit should read LISA O'CONNOR/AFP/Getty Images)
LAS VEGAS, NV - MAY 20: Model Hailey Baldwin attends the 2018 Billboard Music Awards at MGM Grand Garden Arena on May 20, 2018 in Las Vegas, Nevada. (Photo by Matt Winkelmeyer/Getty Images for dcp)
NEW YORK, NY - MAY 16: Hailey Baldwin attends the 2018 Turner Upfront at One Penn Plaza on May 16, 2018 in New York City. (Photo by Taylor Hill/FilmMagic)
CANNES, FRANCE - MAY 12: US model Hailey Baldwin arrives for the screening of the film 'Girls of the Sun (Les Filles du Soleil)' in competition at the 71st Cannes Film Festival, France on May 12, 2018. (Photo by Mustafa Yalcin/Anadolu Agency/Getty Images)
Hailey Baldwin at the 'Girls Of The Sun (Les Filles Du Soleil)' premiere during the 71st Cannes Film Festival at the Palais des Festivals on May ZZZ, 2018 in Cannes, France. (Photo credit should read John Rasimus / Barcroft Media via Getty Images)
CANNES, FRANCE - MAY 12: Winnie Harlow, Hailey Baldwin and Bella Hadid attend a Dior dinner during the 71st annual Cannes Film Festival at JW Marriott on May 12, 2018 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 12: Model Hailey Baldwin is seen during the 71st annual Cannes Film Festival at on May 12, 2018 in Cannes, France. (Photo by Marc Piasecki/GC Images)
NEW YORK, NY - MAY 07: Shawn Mendes and Hailey Baldwin attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Kevin Mazur/MG18/Getty Images for The Met Museum/Vogue)
NEW YORK, NY - MAY 07: Hailey Baldwin attends the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Kevin Mazur/MG18/Getty Images for The Met Museum/Vogue)
NEW YORK, NY - MAY 03: Hailey Baldwin leaves the Tiffany & Co. Paper Flowers event on May 3, 2018 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - APRIL 27: Paris Hilton (L) and Hailey Baldwin attend 'The American Meme' screening premiere during the 2018 Tribeca Film Festival at Spring Studios on April 27, 2018 in New York City. (Photo by Gary Gershoff/WireImage)
NEW YORK, NY - APRIL 27: Hailey Baldwin attends the 2018 Tribeca Film Festival World Premiere of Bert Marcus' THE AMERICAN MEME on April 27, 2018 at Spring Studios in New York City. (Photo by Dimitrios Kambouris/Getty Images for Bert Marcus Productions)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0860 -- Pictured: Model Hailey Baldwin arrives for an interview on April 27, 2018 -- (Photo by: Andrew Lipovsky/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - APRIL 26: Model Hailey Baldwin is seen leaving the 'Live with Kelly and Ryan' show on April 26, 2018 in New York City. (Photo by Raymond Hall/GC Images)
NEW YORK, NY - APRIL 09: Model Hailey Baldwin attends the International Center Of Photography's 2018 Infinity Awards on April 9, 2018 in New York City. (Photo by Craig Barritt/Getty Images for ICP)
LOS ANGELES, CA - MARCH 24: Jaden Smith, Kendall Jenner and Hailey Baldwin attend March For Our Lives Los Angeles on March 24, 2018 in Los Angeles, California. (Photo by Presley Ann/WireImage)
INGLEWOOD, CA - MARCH 11: Hailey Baldwin speaks onstage during the 2018 iHeartRadio Music Awards which broadcasted live on TBS, TNT, and truTV at The Forum on March 11, 2018 in Inglewood, California. (Photo by Kevin Winter/Getty Images for iHeartMedia)
Hailey Baldwin attends the 2018 Vanity Fair Oscar Party following the 90th Academy Awards at The Wallis Annenberg Center for the Performing Arts in Beverly Hills, California, on March 4, 2018. / AFP PHOTO / JEAN-BAPTISTE LACROIX (Photo credit should read JEAN-BAPTISTE LACROIX/AFP/Getty Images)
BEVERLY HILLS, CA - MARCH 04: Hailey Baldwin attends the 2018 Vanity Fair Oscar Party hosted by Radhika Jones at Wallis Annenberg Center for the Performing Arts on March 4, 2018 in Beverly Hills, California. (Photo by Jon Kopaloff/WireImage)
MILAN, ITALY - FEBRUARY 25: Hailey Baldwin walks the runway at the Tommy Hilfiger show during Milan Fashion Week Fall/Winter 2018/19 on February 25, 2018 in Milan, Italy. (Photo by Venturelli/WireImage)
LONDON, ENGLAND - FEBRUARY 21: *** EDITORIAL USE ONLY IN RELATION TO THE BRIT AWARDS 2018 *** Hailey Baldwin attends The BRIT Awards 2018 held at The O2 Arena on February 21, 2018 in London, England. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - FEBRUARY 21: Hailey Rhode Baldwin seen attending Warner Music Group afterparty at The Freemasons' Hall on February 21, 2018 in London, England. (Photo by Ricky Vigil/GC Images)
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