In their recent “blink-and-miss-the-brief-reconciliation” relationship, it seems as if Samantha Ronson has again found her brain and ended things with kleptomaniac Lindsay Lohan. A pal of Ronson says that while the couple never officially reconciled romantically, their relationship has now hit the ultimate dead end with no chance of even a friendship remaining after Lohan has reportedly been publicly displaying some disturbing and maniac behavior lately.

Per People:

“Sam let Lindsay back into her life as a friend, but now even a friendship seems impossible,” says the source. “No matter how many times she promises to change, Lindsay loses control and starts acting like a maniac.

The source also claims that Lindsays recent antics are what prompted Sam to cut Lindsay out of her life. In addition to being investigated for a jewel theft from an Elle photo shoot in London (read about that here), Lohan posted a half naked photograph of herself yesterday on her Twitter with the caption “I’m THAT bored!” before twittering a personal shout-out to Ronson saying “I can’t sleep. Samantha Ronson — it’s your fault.” Later, Lindsay accused Samantha of cheating, again by twittering, “Why do people cheat? When love is always standing right in front of their face(s)?? SR?”

The pair are said to have broken things off again Monday night after a brutal argument over none other than Nicole Richie. Apparently Nicole has always been a major sticking point in the relationship between Ronson and Lohan, making no secret of her distaste for Lindsay.

Per E!:

“Nicole refuses even to be in the same room as Lindsay,” says a source, noting that just last week Nicole invited Sam to a mutual friend’s birthday party at Bar Marmont with the stipulation that she not bring Lindsay. “Sam went to the party, and it really upset Lindsay,” says the source.

After having dinner with Nicole at Izakaya on Monday night, Sam allegedly sent Lindsay a breakup text, giving her the old heave-ho and telling her not to talk to her ever again. Doesn’t seem like its really affected Lindsay much however, as she was seen yesterday in good spirits out shopping in NYC. Whats it going to take for Lohan to clean up her act? I dont feel sorry for her – she’s made her bed, now its time to lay in it.

Wonder how long it will take until they are photographed together again. By the time you finish reading this, they’ll probably be back on… again.

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Images Via: Pacific Coast News