Eva Longoria Parker is in the doghouse with ditzy pal, Jessica Simpson. Jess recently hit the roof after finding out that Eva had been spotted actually being nice to her ex John Mayer.

Page Six reports:

When her close pal Jessica Simpson got wind that Longoria was hanging with Simpson’s ex, John Mayer, the other night at Gold Bar on Broome Street, she “went nuts,” said an insider. “When Jessica heard that Eva was being friendly and polite to John, she called her a back-stabber and was furious.”