Emma Watson has laughed off reports of a romance with her latest co-star Johnny Simmons. Despite the couple being photographed going for a run together in the Pennsylvania countryside, the Brit insisted they were just friends. Wearing a pair of cropped leggings and sports jacket, the 21-year-old looked fresh-faced after her workout session. The Harry Potter star has been in the US since last month filming The Perks Of Being A Wallflower with Simmons. The movie is an adaptation of the novel of the same name by Stephen Chbosky. And despite recent internet reports claiming the pair are a couple, Watsons representative insists her client is just work colleagues with Simmons, 25. Her representative tells media persons: 'This is complete fiction. Watson was linked to Simmons just days after she lamented about her non-existent lovelife in an interview with the Sunday Times. She said: 'I say to my friends, Why hasnt X called me? Why doesnt anyone ever pursue me? Theyre like, Probably because theyre intimidated. 'It must be the fame wall. It must be the circus that goes around me. Me, as a person, I find it hard to believe I would be intimidating. DM