Britney Spears' on/off boyfriend J.R. ROTEM has posted an advert on a Jewish dating website blasting the "cheap chicks" he has been dating, and appealing for a girl with "good values". Spears, 26, has been spotted with Rotem throughout 2007, ever since her split with husband Kevin Federline, and last week (29Nov07) the music producer claimed to have fathered a child with her. He told a U.S. magazine "it's true" when asked whether he had got the troubled pop star pregnant with her third child, although Spears has since rubbished the allegation. But now Rotem seems to be turning on the star. He writes on the dating site that girls "looking to use a guy like me for a music career" are just the type he wants to avoid. He adds, "Hey girls... congrats on stumbling onto my profile - you just hit the jackpot! I am Jonathan, an established music producer who is having a challenging time meeting a hot Jewish girl with good values. "The success and visibility I have earned in the music industry keeps me surrounded by the wrong girls (gold-diggers, cheap chicks, wannabe artists looking to use a guy like me for a music career; money, fame, etc). "I would never cheat or lie to anyone I'm with as I believe in treating others as you would be treated."