Samantha Ronson changed the locks on her door this week after her latest public spat with girlfriend Lindsay Lohan, said The fight escalated after Ronson’s family ordered Lohan barred from a party at which Ronson was DJ-ing. Lohan showed up and was “restrained from coming in by five security guards,” said a witness. Later, Lohan sent Ronson a series of Twitter messages accusing her of cheating and abusing drugs, said the London Daily Mail. “So you win, you broke my heart,” Lohan wrote. “Now go away.”