Queen Latifah Breaking Up with Girlfriend?

Gossip blogger Perez Hilton reports that Queen Latifah and her girlfriend of several years Jeanette Jenkins, may be splitting up:

"Sources tell us that Queen Latifah and her girlfriend, Jeanette Jenkins (pictured above), are on the verge of a split. The pair, who have been dating for a few years, have been arguing a lot lately, several sources on the set of Hairspray reveal to PerezHilton.com exclusively.

The Queen has been in Toronto filming the movie musical with John Travolta and she took Jeanette with her to Canada.

"Latifah tells everyone that Jeanette is her trainer - and she does work in fitness - but on the set they haven't kept their relationship a secret," says one spy.

What is causing the demise of the Queen's lezbot relationship?

"There is a third party involved," says a source. "The Queen has been cheating!"

Latifah and Jeanette were seen getting into fights at their hotel - the SoHo Metropolitan - two nights in a row recently."