The actor was asked if he's sided with SJP or his on-screen love interest during an interview with KTLA in Los Angeles on Wednesday, after the very public feud between the two women following the demise of a third film.
"If you can't say something nice, don't say anything at all," Lewis said. "Listen, I have to say that Sarah was always just so lovely and such a consummate professional and I think that people should remember their graciousness and the things that have been given to them and I'm gonna stop there because I've got nothing good to say."
But anchor Sam Rubin wasn't fully satisfied with Lewis' answer, so he asked if the nice remarks about SJP meant that he's "Team Sarah."
"I might just have to say yeah. What a gracious lady. She was always so good to me," Lewis said.
"Were other people not as good to you?" Rubin then asked. "Sarah was amazing," Lewis -- very tellingly -- responded.
The drama between the two women started last September when SJP confirmed that the possibility of a third movie was dead. Reports subsequently emerged claiming it was actually Cattrall's "outrageous demands" and lack of interest that held up the project.
Cattrall later openly admitted to TV host Piers Morgan that she didn't have any desire to make another "Sex and the City" movie, and denied her "demands" had anything to do with production shutting down.
"Now at this very moment it's quite extraordinary to get any kind of negative press about something that I've been saying for almost a year of 'no' that I'm demanding or a diva," Cattrall said. "And this is really where I take to task the people from 'Sex and the City,' and specifically Sarah Jessica Parker, in that I think she could have been nicer."
"My mom asked me today, 'When will that Sarah Jessica Parker, that hypocrite, leave you alone?' Your continuous reaching out is a painful reminder of how cruel you really were then and now," Cattrall captioned her Instagram post on Saturday.
"Let me make this VERY clear. (If I haven't already). You are not my family. You are not my friend," Cattrall continued. "So I'm writing to tell you one last time to stop exploiting our tragedy in order to restore your 'nice girl' persona."