LEDGER REFUSED TO ENTER REHAB IN 2006

Heath Ledger's battle with alcohol and drugs was so harmful to his relationship with Michelle Williams that she tried to get him to enter rehab, Us Weekly reports in its latest issue, on newsstands now.

For three years, Williams was a firsthand witness to the gifted actor's use of alcohol and drugs, including cocaine, heroin and "a variety of pills," says a Ledger confidant.