Cooperman and Lohan were spotted on a gym trip away from the rehab center last week. A friend of Lohan warned, "Dori is trying to worm her way into a friendship with Lindsay and it won't work."

Dori Cooperman entered Promises for help with prescription pills and booze two weeks ago after she checked out of the Meadows rehab clinic in Arizona because it wasn't "cool" enough. Cooperman "had been talking about going to rehab for a while," said one of her pals. In April, Cooperman was arrested on forgery and larceny charges for swiping a neighbor's $4,300 check and depositing it. Under a special probation, her record will be expunged if she keeps her nose clean for two years.