Credit: Jamie McCarthy/

Lindsay Lohan may be moving to a new pad -- but she's not leaving her old friends behind!

The starlet, who finished her 90-day rehab stint at the Betty Ford Center in Rancho Mirage, California on Monday, is leaving her old West Hollywood apartment behind for a new four-bedroom beach house in Venice, California right next door to ex girlfriend Sam Ronson!

Unfortunately for Lohan, 24, her former paramour is none too pleased with her new neighbor.

When Lohan's dad, Michael, was moving things into her new place, "Samantha walked out of the building next door," a source tells "She was shaking her head and looking disgusted. She kept saying, 'I didn't plan it this way.'"

And while Lohan Tweeted an inspirational quote from Gandhi on New Year's Day, writing "Today is the first day of the rest of my life," her ex is far less thrilled with the fresh start.

When photographers asked the DJ if she had any New Year's resolutions, she replied simply, "No. I'm too pissed off right now."