Could Tori Spelling be dealing with yet another heartbreak? There's a new report that says her husband Dean McDermott might be cheating on the reality television star with his ex-wife, Mary Jo Eustace.

Tori Spelling, Dean McDermott News 2015: Marriage Back On Track As Actress Shares Adorable Photo Of The Couple

According to Hollywood Life on Friday, McDermott was caught having some "one-on-one" time with his ex and is allegedly hooking up with her behind his wife's back.

"She's heartbroken," a source told Star magazine of Spelling is dealing with her husband's betrayal. "She's trying to put on a brave face, but she's at a complete loss as to how to deal with it."

Tori Spelling, Dean McDermott News: Couple Takes Their Kids Liam And Stella To Their First UFC Fight

The insider added, "She doesn't recognize the man she married."

So far, Spelling and McDermott haven't made any comments about the report.

Just recently, it was reported that Spelling's brother Randy Spelling is worried about her health and the issues she's been having with her husband.

According to In Touch Weekly back in March, Randy, who is also a life coach, is concerned about his famous sister and her marriage to McDermott. The couple have been trying to rebuild their relationship after he allegedly cheated on her with a fan last year.

An insider said, "He feels bad for his sister. He saw how unhealthy her life is right now and offered assistance. He wants her to start by prioritizing what's important and getting spiritual help for her issues."