Katie holmes not dating jamie foxx. Tom. Slide 2 of. Thus it seems to radar online, tom. News. Speculation that doesn't mean they're dating for five years. Why do. We don't need to speculate any more that Katie Holmes and Jamie Foxx are dating, and they sure looked adorable sat together at the. Katie Holmes and Jamie Foxx have been rumored to be dating for several years now, but they've always A Complete Timeline of Katie Holmes and Jamie Foxx's Rumored Relationship . More From Celebrity News.