Rock has been cited for misdemeanor battery for allegedly attacking Lee during the MTV Video Music Awards Sunday.
Anderson talked about the incident on "The Ellen DeGeneres Show" Wednesday.
"Last time you were here you said they didn't get along," DeGeneres said, to which Anderson replied, "Can ya tell?"
The actress and mother of Lee's two children said she didn't actually witness the fight, although she had been at the event earlier in the evening.
"I actually left," she said. "As soon as I left, meow! They all went after each other."
DeGeneres noted that she and Lee seemed close during the awards ceremony.
"He pulled me on his lap and spanked my butt," Anderson recalled, then added, "That was okay. What are you going to do? Boys."
Anderson also revealed on the show that she is in love with a professional poker player.
She declined to identify him, however.