Cory Monteith, who died aged 31 in a Vancouver hotel, was dating 'Glee' co-star Lea Michele.
In April, a representative for the Canadian actor said he was at a rehabilitation facility for an unspecified substance addiction.
Michele told People magazine at the time that she loved and supported her boyfriend and was proud he was seeking help.
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A motorist who boasted about clocking 142mph on a motorway shot through a red light and killed another driver the following night.