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

Amid the ongoing divorce drama between "Flip or Flop" stars Christina and Tarek El Moussa, the latter reportedly slammed his estranged wife's new boyfriend Gary Anderson. In an Instagram post, which was later deleted, Tarek took shots at Christina's decision of dating Anderson, who is a contractor for their show.

According to the New York Daily News, the HGTV reality star chose the cover of the 2016 romantic comedy “Why Him?” for his most recent Instagram post which he captioned “OMG!!!" Tarek also added: “If you are having a #rough day you #MUST watch this #movie!! I just #cried of laughter for two hours. #Top three movies #ever!!!!! #whyhim.”

The post is speculated to be aimed at his estranged wife and his new boyfriend whom she started dating after splitting with Tarek. The post also hints at Tarek's few "rough days" in recent weeks over his ongoing divorce. However, it was unclear why Tarek deleted the Instagram post Tuesday.

Tarek and Christina reportedly split in May 2016 following a gun incident, which resulted in police being called to their home. The former couple announced their separation in December, but claimed the gun incident was a misunderstanding.

Last week, Tarek filed for divorce from Christina and requested joint legal and physical custody of his two children. Along with this, Tarek demanded spousal support from his estranged wife and asked her to pay his attorney's fees. He also requested that the court not award any alimony to her.

While Tarek and Christina said in their statement they were not involved with anyone while they were married, several rumors surfaced claiming the two cheated on each other. A report also claimed Tarek caught Christina sending inappropriate messages to Anderson.

“Christina grew close to Gary,” an insider told In Touch Weekly. “Tarek was suspicious that she was getting involved with someone but had no concrete evidence. [In May], Tarek saw Christina’s phone and [believed] there was some inappropriate texting going on between Christina and Gary.”

However, the El Moussas have denied this, saying: “Neither of us was involved in a romantic relationship with any third party prior to our separation, or believes the other was.”