JENNIFER Lopez stunned in a sexy red dress as she returned to work following her romantic Montana getaway with Ben Affleck.

The pictures come after a source revealed that her ex-fiance, Alex Rodriguez, believed her romance with Ben was “fake news.”

Jennifer Lopez returned to work on TuesdayCredit: MEGA/BACKGRID

She was filming a commercial for CoachCredit: MEGA/BACKGRID

She made sure to keep herself updated with her phoneCredit: MEGA/BACKGRID
Jennifer, 51, is not letting the news of her new romance with Ben, 48, stop her from hustling as she returned to work.

She recently came back from her vacation with the Batman actor to Montana following a heart-to-heart conversation where they decided to give their romance a second shot 18 years later.

The singer showed up on the Miami set in a stunning red dress featuring a high-slit and a flowy skirt.

She appeared in high spirits as she danced and smiled at the cast and crew, before stepping in front of the camera.

She twirled in front of the camera while dancing to her song Let’s Get LoudCredit: MEGA/BACKGRID

She showed off her toned legsCredit: MEGA/BACKGRID

She also seemed very friendly with those around herCredit: MEGA/BACKGRID
While filming a commercial for Coach, she twirled and danced around with a fellow actress to a Cuban band playing her song, Let’s Get Loud.

Jennifer, who shares twins with ex-husband Marc Anthony, completed her stunning look by wearing her hair down her back and covering up with a gray overcoat.

Off-camera, she was snapped sitting in a lawn chair and checking her phone non-stop, either juggling work commitments or awaiting a text from her rekindled boo, Ben.

JLo had plenty of fun during the shootCredit: MEGA/BACKGRID

She even held hands with one of her co-starsCredit: MEGA/BACKGRID

She was all smiles while talking to crewCredit: MEGA/BACKGRID

She completed her look with a gray overcoatCredit: MEGA/BACKGRID

She also posed while resting on a lawn chairCredit: MEGA/BACKGRID

She also had a change of outfit to a brown ensembleCredit: MEGA/BACKGRID
The shoot wasn’t complete without a change of outfit as she switched her stunning red dress for a pair of boots, brown sweatpants, a white tank top, and a brown cardigan.

She also rocked a bucket hat with the Coach logo.

The singer was later spotted making her way into the gym with a lip face mask.

Earlier today, a source told In Touch Weekly that Arod is “really heartbroken” about JLo’s reported reunion with Ben.

Following her shoot, she was spotted walking into the gymCredit: The Mega Agency

Jennifer might need some getting used to going to the gym alone as she usually went with ARodCredit: The Mega Agency

Jennifer came back from a trip to Montana with BenCredit: Getty

Alex Rodriguez thought the news of Bennifer were a jokeCredit: Getty

Alex was shocked when he found out JLo had already moved onCredit: Getty
They went on: “There’s a lot of excitement for the return of Bennifer but not everyone’s rejoicing about the rekindled romance.

“Alex may not be in the best position to judge, but he doesn’t think Jen is making a good decision. He thought the stories of Jen being back with Ben were fake news.”

The insider went on saying the news of the return of Bennifer came as a shock to ARod, sharing: “Jen getting back with Ben, after all these years, and with all the heartache she went through, is the last thing Alex expected.

“[Alex] was holding out hope that Jen would take him back.

Alex hoped he could get JLo backCredit: AFP
“But, according to some of Jen’s friends, that ship has sailed. She tried to reconcile with Alex, and she just couldn’t make it work. She’s not looking back; Alex is definitely in her rearview mirror.”

The source explained the bond between Jen and Ben is “real,” noting: “There’s no doubt that Jen and Ben have something special between them.

“She knows what this looks like, and that the whole world is watching, but she doesn’t care, she wouldn’t do it if it wasn’t real.

“Jen is doing what she always does when it comes to relationships — she’s following her heart.”

Jennifer has a real bond with BenCredit: AFP
Alex might be even more shocked after he heard that Ben had been flirting with JLo when she was filming in the Dominican Republic — the same time when he was trying to repair their bond after claims he had a wandering eye.

According to TMZ sources, the 49-year-old actor and the 51-year-old singer were in very regular contact by email starting in early February when she flew to the Caribbean to begin filming Shotgun Wedding.

The tone of the emails were allegedly loving and longing for Jennifer.

Allegedly, Ben commented on her beauty when he saw some pictures of her in the Caribbean paradise and claimed he wished he could be there with her.

One of the emails also referenced Jennifer’s love for Ben’s writing and included a line about him being able to “own her heart” with his pen, TMZ claimed.

The two continued their email communication into April when news of Jennifer and Alex’s crumbling engagement began.

However, the two did not meet up until after she broke off her engagement with the baseball superstar.

Jennifer Garner and Ben were together for ten yearsCredit: Getty

Ben shares three kids with ex Jennifer GarnerCredit: Splash

Jennifer and Alex took care of their kids together and they got along greatCredit: Getty
Meanwhile, Ben wed actress Jennifer Garner, 49, in 2005, with whom he shares daughters Violet, 15, Seraphina, 12, and son Samuel, nine, although they separated in 2015.

Jennifer shares 13-year-old twins Emme and Max, with Marc Anthony.

Alex and his ex-wife, Cynthia Scurtis, share daughters, Natasha, 16, and Ella, 13.