Jessica Simpson hits back at OK! Magazine over Tony Romo claims

Actress Jessica Simpson has hit out at America's OK! magazine over reports that she had been dumped by Dallas Cowboys quarterback Tony Romo.

TMZ is reporting that Simpson's lawyers have sent a strongly-worded letter demanding a retraction for an article which claims Romo broke up with the singer because she was "too 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."

Simpson's rep was unavailable for comment.

It was recently reported that Jessica's dad & manager, Joe Simpson was  ruining her relationship with Romo.

"Joe is always around - he even went with Tony and Jessica to Cabo on holiday. It's weird that Joe was on vacation with them. But he oversteps his bounds all the time, and Jess lets him," one family friend said.

"Joe just can't leave Jess' love life alone. His over protectiveness has always caused huge problems in Jessica's relationships."

Although Joe's shadow has affected his daughter's relationships with her ex-husband Nick Lachey and John Mayer, Tony is happy to indulge Joe - for now.

A source told Life and Style Weekly magazine: "Tony just laughed when he heard Joe was coming on holiday. He knows Joe is one of his biggest fans, and he wants to have a good relationship with him. So if Joe wanted to hang out with them in Cabo, there was no way Tony was going to say no.

"Tony likes Joe, but at some point he's going to get sick of Joe hanging around and all the calls and family get-togethers."