Rumor Alert: Ashlee Simpson has booted bisexual BF Pete Wentz from her mansion after a bout of constant bickering and pressure from her family to dump the makeup-wearing rocker.

NOW Magazine claims the Fall Out Boy bassist moved out of Ashlee’s Hollywood Hills home after the couple began constantly arguing about Pete’s messiness and 23-year-old Ashlee’s bossiness.

And it seems Pete has already moved on, having been spotted with Ally Hilfiger — daughter of fashion designer Tommy Hilfiger — at a New York party last week.

“Ashlee is upset, but she values her dad’s opinions and has agreed,” says one Simpson source.