Mary-Kate’s worst addiction: One bad boy after the next

Mary-Kate's boyfriend Heath Ledger overdosed a month ago, but she's already moved on to "Italian Playboy" aka old creep Lapo Elkann. He's not only the heir to the $7.3 billion Fiat fortune, he also spent three month in a coma after overdosing on heroin and cocaine in the home of a transsexual in 2005. Call us crazy, but the girl is only 21. Can't her dad, or even a close friend lend a little helpful advice to avoid these types of bums? After being linked several times in the past, they were spotted flirting at Fashion Week in Paris and MK can't seem to resist. "Lapo's a good-looking guy, and Mary-Kate seemed to love the attention she was getting from him," a source told Star of the guy nine years her senior. Well, either she'll outgrow her proclivity for bad boys or we'll have years of juicy gossip to read. It's not all bad. [Star]