On Wednesday, as part of a book launch, she said she had considered a legal divorce but could not go through with it because she was determined to work through it.
She put the relationship breakdown to “a lot of things” and by 2016 they were “exhausted with trying”.
Previously there had been speculation about the couple’s marriage in 2020 after the pair discussed on her Facebook show Red Table Talk that Pinkett Smith had been in an “entanglement” with artist August Alsina.
The actors met in 1994 when she auditioned for The Fresh Prince of Bel-Air, and later married in 1997.
The pair have two children together – Jaden Smith and Willow Smith – along with Trey Smith, Smith’s son from his first marriage.