The fur is flying, and so are the fists between ex-girlfriends Lindsay Lohan and Samantha Ronson. A source tells Radaronline.com that the tension between the gruesome twosome has escalated to the point where they're physically assaulting each other. Although they supposedly broke up, the actress and the DJ have been spotted out and about together recently. However, there is hardly any love lost between the two. According to the source, Lohan threw a drink in Ronson's face one night. TMZ reported earlier that Ronson was booted from a club after someone was flicking cigarette butts at her. Perhaps it was just retribution for some of Ronson's rage that has supposedly been directed at Lohan. The insider tells Radar, "One time I saw her [Lindsay] and she had a large welt on her head. She told me that Sam beat the (bleep) out of her. She also said that Sam even punched and choked her one time." Apparently, the former galpals are also living in the same apartment building, and everybody knows familiarity breeds contempt. And although they seem off-again, the tumultuous relationship is far from over. Adds the source, "It's so twisted. They're not together, but they are. I never thought I'd ever say this, but I really do feel sorry for Lindsay. She is just lost. She's alone. She has no friends to turn to."