Benji Madden has gone to extreme lenghts to ensure his girlfriend of seven months, socialite Paris Hilton, isn’t keeping in touch with any of her famous exes.

The Good Charlotte rocker reportedly hijacked Paris’ BlackBerry and erased the numbers of several of the heiress’ former bedfellows-on-again/off-again flame Stavros Niarchos and ex-fiance Paris Latsis were the first to be deleted.

“Those were the first numbers he erased,” a Paris pal tells Star Magazine. “Benji seems to have an issue with the guys she’s dated.”