Lindsay Lohan warned Ashley Olsen to "get away" from her "girlfriend" — celebrity DJ Samantha Ronson — on Friday night, the New York Post's Page Six gossip column reported.

"Ashley Olsen said hello to Sam at [the Beatrice Inn in New York City], and Lindsay screamed at her, 'Get your 15-year-old 'Full House' a-- away from my girlfriend,'" said a Page Six spy.

Lohan and Ronson have long been rumored to be more than pals. According to Page Six, Lohan has created a Facebook profile under the name "Lindsay Ronson."

At New York's Hawaiian Tropic Zone on Saturday, where Ronson was spinning, Lohan reportedly said Ronson "was ignoring her" and became upset.

"Samantha was really focused on her work and didn't leave the booth for anything," said the Page Six spy.

People magazine reported that the not-long-out-of-rehab Lohan was downing Grey Goose vodka.

Click here for the Page Six report