The greatest Olympian swimmer of all time Michael Phelps and his new girlfriend Megan Rossee make their first appearance as a couple together on the red carpet of the Speedo party at Roof Gardens nightclub in London, England on August 6, 2012. While the couple have been dating for about five months, there are rumors that Megans is using Phelps to increase her profile in the hopes of making it in Hollywood… The greatest Olympian swimmer of all time Michael Phelps and his new girlfriend Megan Rossee make their first appearance as a couple together on the red carpet of the Speedo party at Roof Gardens nightclub in London, England on August 6, 2012. While the couple have been dating for about five months, there are rumors that Megans is using Phelps to increase her profile in the hopes of making it in Hollywood…