Actor Jamie Foxx has shot down rumours of dating actress Katie Holmes.. The actor denied relationship claims when he was filmed in Westlake, US this week by a website TMZ, reports mirror.co.uk. . "Come on, you guys have been trying to make that stick for three years,” he said. . The actress and Foxx sparked romance rumours last year after they were spotted getting cosy at a number of events. . He went on to explain that the duo had been working on an "animation project" together. . "We're working on that, that's all it is," he said. . Holmes, who split from her husband and actor Tom Cruise in 2012 after five years of marriage, hasn't been officially with anyone since.