Jessica Simpson is fighting mad over a recent OK! magazine article claiming she was dumped by Dallas Cowboys quarterback Tony Romo. TMZ.com first reported that Simpson's lawyers had fired off a strongly-worded letter demanding a retraction for an article which claims Romo broke up with the singer because she was high-maintenance. The letter referred to the article as a "smear campaign." Her lawyers insist: "Mr Romo and Ms Simpson have not broken off their romantic relationship." A rep for Simpson confirms that the singer's lawyer sent a letter to OK! but had no additional comment. A source close to Simpson says, "Jess and Tony did not break up. OK!'s story was full of lies."source