Dean McDermott is allegedly cheating on his reality TV star wife, Tori Spelling, again.

According to Star Magazine, 48-year-old McDermott is believed to be "hooking up" with his 52-year-old ex-wife, Mary Jo Eustace, after "shocking photos" of them meeting in secret were recently made public.

"She's heartbroken," a source alleged to the magazine about Spelling. "She's trying to put on a brave face, but she's at a complete loss as to how to deal with it."

HollywoodLife reports that McDermott and his ex-wife recently rendezvous at her home, and Spelling became aware of it by listening to Eustace's podcast interview with Brandi Glanville several weeks ago.

The website adds during the interview, Eustace admitted that McDermott recently came to her home without any cameras being present. When Glanville asked if he had hit on her, she responded "a little bit." Around the same time, the two were spotted having lunch together.

Reportedly, the renewed drama has resulted in Spelling concentrating all her attention on the young children the couple share together. McDermott previously cheated on his wife with several women -- much of which played out in the "True Tori" reality show they starred in, where they were purported to be working on their problems.

Spelling was recently hospitalized for what was described as "severe migraines," but sources now tell HollywoodLife those episodes were actually caused by the "stress of learning what her husband, Dean, was allegedly up to behind her back."

One of the sources later added, "She doesn't recognize the man she married."

Meanwhile, fans of Spelling's recently expressed concern about her health. Well-wishes poured in on her Facebook page after McDermott rushed her to the hospital on March 6. Spelling, 41, later took to her platform to thank her supporters and assure them she was doing well.