“Olympic swimmer Michael Phelps cheated on the current Miss California USA with disgraced former Miss California USA Carrie Prejean, according to online gossip websites. Nicole Johnson, who was recently crowned Miss California USA 2010, told TMZ.com she had a secret relationship with Phelps for about a year between 2007 and 2008. ‘Now that it is after the fact, I will admit that we were together,’ TMZ quoted Johnson as saying. ‘We agreed to keep this private because it was the only thing that he could keep private ... we remain close friends.’ But PerezHilton.com reports that Phelps and Johnson broke up because the 14-time Olympic gold medallist was cheating on her with Prejean. ‘The main reason they ended their relationship is because Carrie Prejean started dating Michael,’ PerezHilton.com quoted an unnamed source as saying. “