Megan FoxandMachine Gun Kellystill have a long way to go before they’re fully back on as a couple, a source tells PEOPLE.“They are slowly working on reconciling but he’s totally in the dog house still,” the source says about the rapper, 33, whoshowed up to theSports IllustratedSwimsuit issue launchThursday night to support his cover-star fiancée, 37, though they did not walk the red carpet together.Says the source, “He’s doing whatever he can to get her back, and she’s making him work for it. It’s still an unhealthy dynamic though, and their friends just don’t see this lasting.“Additionally, their wedding planning “remains halted,” according to the source.“He has a lot of proving himself to do, and he doesn’t want to give her up. He isgreat with her kids and super hands on. It’s a work in progress,” the source adds.Megan Fox; Machine Gun Kelly.Gregory Pace/Shutterstock; Taylor Hill/WireImageReps for MGK and Fox did not immediately respond to PEOPLE’s requests for comment.TheJennifer’s Bodyactress and the “Bloody Valentine” musician (aka Colson Baker) met while making the movieMidnight in the Switchgrassin 2020; they got engaged in January 2022.Foxhinted at a possible breakupthis past February, removing photos of her fiancé from her Instagram account and posting a cryptic caption. A week later, she returned to Instagram to break her silence amid speculation that their relationship might be over.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.Megan Fox and Machine Gun Kelly on Feb. 5.Vivien Killilea/Getty for Universal Music Group for Brands"There has beenno third party interference in this relationshipof any kind. That includes, but is not limited to…actual humans, DMs, AI bots or succubus demons,” Fox wrote at the time.By late March, a source told PEOPLE Fox was continuing to not wear her engagement ring and that they were in therapy to work on their differences. But, the source said, Fox was “having a hard time trusting” MGK.Megan Fox and Machine Gun Kelly in May 2022.Todd Williamson/NBC/NBCU Photo Bank via GettyFox said on theGive Them Lala … With Randallpodcast back in 2020 that she felt an instant connection with MGK when they met and began working together.“I knew right awaythat he was what I call a twin flame,” she said at the time. “Instead of a soul mate, a twin flame is actually where a soul has ascended into a high enough level that it can be split into two different bodies at the same time. So we’re actually two halves of the same soul, I think. And I said that to him almost immediately, because I felt it right away.”

Megan FoxandMachine Gun Kellystill have a long way to go before they’re fully back on as a couple, a source tells PEOPLE.

“They are slowly working on reconciling but he’s totally in the dog house still,” the source says about the rapper, 33, whoshowed up to theSports IllustratedSwimsuit issue launchThursday night to support his cover-star fiancée, 37, though they did not walk the red carpet together.

Says the source, “He’s doing whatever he can to get her back, and she’s making him work for it. It’s still an unhealthy dynamic though, and their friends just don’t see this lasting.”

Additionally, their wedding planning “remains halted,” according to the source.

“He has a lot of proving himself to do, and he doesn’t want to give her up. He isgreat with her kids and super hands on. It’s a work in progress,” the source adds.

Megan Fox; Machine Gun Kelly.Gregory Pace/Shutterstock; Taylor Hill/WireImage

Mandatory Credit: Photo by Gregory Pace/Shutterstock (13919893m) Megan Fox 2023 Sports Illustrated Swimsuit Issue Launch, New York, USA - 18 May 2023; NEW YORK, NEW YORK - MAY 18: Machine Gun Kelly attends the 2023 Sports Illustrated Swimsuit Issue Launch at Hard Rock Hotel New York on May 18, 2023 in New York City. (Photo by Taylor Hill/WireImage)

Reps for MGK and Fox did not immediately respond to PEOPLE’s requests for comment.

TheJennifer’s Bodyactress and the “Bloody Valentine” musician (aka Colson Baker) met while making the movieMidnight in the Switchgrassin 2020; they got engaged in January 2022.

Foxhinted at a possible breakupthis past February, removing photos of her fiancé from her Instagram account and posting a cryptic caption. A week later, she returned to Instagram to break her silence amid speculation that their relationship might be over.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Megan Fox and Machine Gun Kelly on Feb. 5.Vivien Killilea/Getty for Universal Music Group for Brands

LOS ANGELES, CALIFORNIA - FEBRUARY 05: (L-R) Megan Fox and Machine Gun Kelly attend Universal Music Group’s 2023 After Party to celebrate the 65th Grammy Awards, Presented by Coke Studio and Merz Aesthetics’ Xperience+ at Milk Studios Los Angeles on February 05, 2023 in Los Angeles, California. (Photo by Vivien Killilea/Getty Images for Universal Music Group for Brands)

“There has beenno third party interference in this relationshipof any kind. That includes, but is not limited to…actual humans, DMs, AI bots or succubus demons,” Fox wrote at the time.

By late March, a source told PEOPLE Fox was continuing to not wear her engagement ring and that they were in therapy to work on their differences. But, the source said, Fox was “having a hard time trusting” MGK.

Megan Fox and Machine Gun Kelly in May 2022.Todd Williamson/NBC/NBCU Photo Bank via Getty

2022 Billboard Music Awards - Arrivals

Fox said on theGive Them Lala … With Randallpodcast back in 2020 that she felt an instant connection with MGK when they met and began working together.

“I knew right awaythat he was what I call a twin flame,” she said at the time. “Instead of a soul mate, a twin flame is actually where a soul has ascended into a high enough level that it can be split into two different bodies at the same time. So we’re actually two halves of the same soul, I think. And I said that to him almost immediately, because I felt it right away.”

source: people.com