The two have been married since 1997 and have two children, Jaden and Willow. Each appeared uncomfortable at times during their exchanges on the talk show.
A representative for Alsina didn't immediately respond to a request for comment.
Pinkett Smith, who starred in two “Matrix” films, questioned why Alsina would bring the episode up again, saying he had broken off communication with her.
She also pushed back at the idea that Smith had given her permission for the affair.
Alsina was quoted in an interview as saying the actor had given his “blessing.”
“The only person that can give permission in that particular circumstance is myself,” Pinkett Smith said, then cut Alsina slack for his remarks.
“I could actually see how he would perceive it as permission because we were separated amicably. And I think he also wanted to make it clear that he is not a homewrecker because he's not," she said.
(Writer: Lynn Elber AP Television Writer)
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