I know by now everyone has to be tired of reading about K-Fed and Britney Spears, I know I am.  However there is reason to believe that Kevin Federline might have been having an affair with former porn star Kendra Jade – and this will just add more proof that he is a loser!

The two met in Las Vegas back in December 2005 when Britney was visiting family in Louisiana, according to Star magazine.

“Kev and Kendra had sex at their friends’ apartment multiple times, starting in early October,” a source told the tab. “Their friend would phone Kendra and a few other girls to come hang out, and it would always end up with Kevin and Kendra heading off to the spare bedroom!”