In late December, Shriver was said to be having second thoughts about divorcing the movie star.
Schwarzenegger was recently spotted wearing what appears to be his wedding ring, sparking rumours that the two would reunite. However, a source has denied these claims.
"The reports of a reconciliation are not true," the source told People.
The pair separated in May after the former California governor admitted that he had fathered a child with a long-term member of his household staff.
In spite of the ongoing divorce proceedings, a family insider insisted that Schwarzenegger and Shriver will always be there for their children.
"Arnold and Maria will always come together when it comes to supporting and loving their children," the insider said.
In August, Shriver joined her estranged husband for a lunch to celebrate his 64th birthday.