Find out the truth about Katie Holmes and Jamie Foxx. What's going on with rumored couple Katie Holmes and Jamie Foxx? Report: Why Katie Holmes Won't Publicly Admit She's Dating Jamie Foxx For the last three years, Holmes and Foxx, a former co-star of Holmes' ex-husband, Tom Cruise, have reportedly been dating in secret, and earlier this week, a report claimed the alleged couple was planning to the the knot and Foxx's home -- and start a family.