Flip or Flop Christina Tarek El Moussa
"Flip or Flop" stars Tarek and Christina El Moussa are pictured, Dec. 13, 2014. Getty Images

Christina El Moussa shared an emotional message on her Instagram account Thursday about "Flip or Flop," raising doubts that the popular HGTV show could be coming to an end. Over the last few days, rumors have resurfaced that Christina cheated on her husband Tarek.

“I’ve never met a group of more positive, fun-loving, funny … all around amazing guys … filming 7 seasons of #FlipOrFlop has been a breeze because of them. I [love] each and every one of you,” Christina captioned a photo with the show's crew.

After Christina and Tarek announced their split in December, rumors made the rounds that the duo may not work together on the show.

“We admire and appreciate Tarek and Christina’s great work on ‘Flip or Flop.’ When it comes to matters related to their own family, we respect their privacy and honor any decision that works best for them and their children,” a statement from the show read at the time. “HGTV is currently airing episodes of ‘Flip or Flop’ and the series will continue production as scheduled.”

According to reports, the El Moussas split after an altercation between the two that involved a gun. The two stars later said the incident was nothing but a "misunderstanding." Tarek filed for divorce from Christina in January, and requested joint legal and physical custody of his two children — Taylor, 6, and Brayden, 1.

On Wednesday, a new report claimed that Tarek hired a private investigator as he suspected Christina was seeing someone.

“When he and Christina were on the rocks, he confessed to the production crew that he suspected she was dating some­one, so he hired a private investiga­tor to follow her. He wanted to know where she was going and what she was doing,” a source told In Touch Weekly, adding that Tarek suspected the person Christina was seeing was Gary Anderson.

“It’s hard for Tarek to see Christina dating, but it’s even worse that Gary is the guy she’s with," the source added. Earlier, reports also claimed Tarek caught Christina sending inappropriate messages to Gary.

While there have been rumors about Christina cheating on Tarek, the former couple said in a statement while announcing their divorce: “Neither of us was involved in a romantic relationship with any third party prior to our separation, or believes the other was.”

While Christina confirmed her relationship with Gary, Tarek has not publicly addressed his relationship with anyone. The former couple continues to work together and focus on their children despite their differences.