Tobey Maguire and Jerry Maguire’s ex, Nicole Kidman, are only friends, a rep for the “Moulin Rouge” star tells Reuters. Apparently, stories are circulating that that two are a twosome. The news service even cites some reports that Kidman took time off from filming her latest movie in Canada to zip into L.A. to be with the “Spider-Man” star. “They’ve known each other for awhile. They’re friends,” the spokeswoman told Reuters. “They hung out together some, a couple of weekends ago. End of story. No romance.” A spokeswoman for Maguire, 26 (Kidman is 34), would only say, “They’re friends, and they hang out sometimes.” Besides the age difference, there is the matter of height. Maguire is reportedly 5’8″. Kidman is officially 5’10” — barefoot. (But with Manolo Blahnik around, who’s barefoot?) Last August, still fresh from her divorce from her 5’7″ husband of 10 years, Tom Cruise, Kidman told David Letterman on the “Late Show” that one of the benefits of the breakup was that she could wear high heels again. Maguire has also been linked romantically to his “Spider-Man” costar Kirsten Dunst, 20 (and, like Cruise, 5’7″), but both have insisted they are nothing more than pals.