As the 20-year-old Mean Girls star checked into the Promises rehab facility in Malibu, California, on Monday--after she was charged with drunk driving--her so-called friends were preparing to go public with the actress' personal hell.
One pal tells Star magazine Lohan attempted to take her own life twice in the same night at a recent Hollywood party.
The source tells the publication, "She grabbed a knife and started cutting at her wrists. A friend made her stop.
"Lindsay ran into the bathroom with a bottle of Advil."
The insider then claims the actress locked herself in the bathroom and threatened to swallow the entire bottle unless she was left alone.
And those are just two incidents from a crazy month that led up to Lohan's car crash on Saturday night, which landed her with a DUI charge.
The actress was also photographed allegedly snorting cocaine in a hotel bathroom.
The friend tells Star, "Lindsay needs to go back into rehab, then spend time soul searching and getting to the roots of her problems. These emotional breakdowns she has are getting worse, and one of these days, she really will kill herself."
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