90210 actress Jennie Garth has fueled rumors Robert Pattinson is dating Kristen Stewart - her husband Peter Facinelli told her the Brit actor is romancing one of his Twilight co-stars.

Stewart and Pattinson have been dogged by reports they are dating ever since they first appeared onscreen together in last year's vampire love story.

The romance rumors went into overdrive when they started shooting the sequel New Moon in Canada earlier this year, but the pair has always denied they're anything but close friends and co-stars.

Pattinson has also previously been linked to another co-star, Nikki Reed.

And Garth, whose husband Facinelli plays a father figure to Pattinson's character Edward Cullen in the films, admits the actor is indeed romancing one of his co-stars - but refuses to reveal which one.

She tells the New York Daily News, "I can't say, because that would be breaking my promise, but he is dating one of them."

(This news article provided by World Entertainment News Network)