I thought Tom Cruise's ego investment in Scientology and her refusal to kowtow to it was why they split up but he stated "Nicole knows exactly why we split up" (paraphrased) and it occured right after they made Eyes Wide Shut ( what a hideous thing) about human sacrifice and shortly thereafter, the creator, Kubrick, a freemason, was disposed of... I say, hmmm... Maybe Tom's history was not the issue.