Lindsay Lohan reportedly spent $15,000 on drugs before she was sent to rehab.
According to her ex-drug dealer, Lindsay plans to go back to her ways when she leaves the facility.
"Lindsay still wants to party," David 'DJ' Joseph said. "But she feels going to rehab saves face in the eyes of the public."
DJ said he has been Lindsay's drug dealer for years, and saw her use cocaine more than the "four or five times" she has claimed to have used it.
"I saw her take a bump more than that when she tested out my deliveries," he said. "It is another example of how much denial she is in."
He said she spent $10,000 to $15,000 on coke and Molly (a pure form of ecstasy). He said he had to cut her off because she was taking too much.
"Lindsay wasn't monitoring what she was taking, and there were lots of enablers around, so I had to walk away," he said. "I feared she would do a line of coke after some pills and then be dead…I am not in the business of helping people kill themselves."