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It started out very innocently, with Lindsay Lohan and Samantha Ronson stepping out together for lunch in Hollywood.

But things took an unsurprising turn for the worst when the two began to squabble over a rental car, which naturally resulted in Samantha locking Lindsay out of her house.

A snitch claims that Lindsay took the DJ’s rental car, forcing Samantha to catch a ride home from a friend. 20 minutes after Sam arrived at her house, Lindsay showed up in the rental, but left soon after realizing she was locked out.

These two ladies won’t be satisfied until they’ve effectively killed the other one as a result of their relationship drama, it seems. Girls, this is a horse with four broken legs. Put it out of its misery already.

Gallery Info: Lindsay Lohan and Samantha Ronson out to lunch together in Hollywood and then in the midst of a fight over a car.