The former EastEnders actress, 27, reportedly left home with her two daughters Ella, five, and Ella, one.
She is said to have returned to live with her parents when Dan is said to be taking care of her six-year-old son Teddy from a previous relationship.
They had been together for seven years and married in 2017.
A source told The Sun, “Jac and Dan had their problems, but the lock-up amplifies everything. She needs to breathe. “
The couple hope to be able to repair their relationship after the lockout ends.
The insider added, “There is still a lot of love out there, but quite simply, Jacqueline needs a bit of a break.
“It has been incredibly tense in recent months and Jacqueline post-jungle has been traumatized by all the speculation surrounding their relationship. “
Jacqueline had alluded to problems earlier this week when she said that she was “taking time” on Instagram.
Next to a smiling photo of herself, she wrote, “Withhold the publication as recently, taking just a little time.
“I hope you are all good! Speak soon! “
Jacqueline also disabled comments.
Their relationship was rocked by rumors of cheating, which Dan has always denied.
Model Chloé Ayling said she made a trio with Dan and their Celebrity Big Brother co-star Natalie Nunn in 2016.
Rumors emerged while Jacqueline was participating in I’m A Celebrity … Get me out of here! 2019, which she won.
Dan then publicly apologized to Jacqueline on Instagram.
It was reported in March of last year that Dan was seen kissing Alexandra Cane of Love Island during a party in Manchester.
In 2018, he was charged with cheating on Jac with Gabby Allen, which they both denied.
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