The EastEnders actress is married to former TOWIE star Dan Osborne – father to her two daughters, four-year-old Ella and one-year-old Mia – who last year denied claims he had cheated with his Celebrity Big Brother co-star Gabby Allen.
In unbroadcast footage on the ITV jungle reality show, The Sun reports that Stephenson – who dated Allen earlier this year – told Jossa, 27, he believed Osborne, 28, had been unfaithful to her.
Sources claims Jossa became “hysterical” and said she would not continue on I’m A Celebrity unless she was allowed to speak to her husband.
In the interest of Jossa’s mental state, and consideration of their duty of care, producers are said to have allowed the soap actress to temporarily exit the jungle to leave Osborne a voicemail about the claims. He was then allowed to send a voicemail back.
The couple were not permitted to speak directly as it may have been seen as giving Jossa an unfair advantage on the show.
Osborne and former Love Island star Allen - who both took part in CBB in September 2018 - were pictured together on a yacht in Spain last year. Her ex-boyfriend Marcel Sommerville accused her of having a fling with Osborne during the holiday.
Jossa, who was pregnant at the time, is said to have temporarily split from Osborne over the claims but they reconciled when she gave birth to daughter Mia.
Their relationship was rocked again in March this year over claims Osborne kissed another Love Island star, Alexandra Cane, 28.
The couple met in 2013 and announced their engagement in 2015, after welcoming their first child together. They married in June 2017.
Stephenson, of X Factor-winning byband Rak-Su, began dating Allen in September 2018 but they are said to have split earlier this year over cheating allegations.
Yahoo UK have contacted I’m A Celebrity for comment.